It's about 150 times as heavy as a Human Heart
It's about one-two-hundredth as heavy as an Anchor of a Cruise Ship
In other words, 0.0000000540 megatonnes is 0.00478 times the weight of an Anchor of a Cruise Ship, and the weight of an Anchor of a Cruise Ship is 209 times that amount.(for QE2 forward anchor, a.k.a. RMS Queen Elizabeth 2)
Each of the forward anchors of the RMS Queen Elizabeth 2 weighs 0.00001130 megatonnes. The anchor of the QE2 now sits in front of the Holyrood Church in Southampton, England, United Kingdom, along a pedestrian tourist route known as "the QE2 mile."
It's about 300 times as heavy as a Hamster
In other words, the weight of a Hamster is 0.003 times 0.0000000540 megatonnes.(for Syrian hamster, a.k.a. golden hamster, a.k.a. Mesocricetus auratus; adult)
An adult Syrian hamster has a typical weight of about 0.000000000200 megatonnes. Known for transporting food in the pouches of their cheeks so that they can bury it later, some hamsters can store up to 0.0000000300 megatonnes of food in their borrows.
It's about 350 times as heavy as a Billiard Ball
In other words, 0.0000000540 megatonnes is 331.268512222150 times the weight of a Billiard Ball, and the weight of a Billiard Ball is 0.0030186992216435 times that amount.(American-style, WPA specifications)
Per the World Pool-Billiard Association, a billiard ball weight must weigh between 0.00000000015592237718750 megatonnes and 0.000000000170097138750 megatonnes. According to legend, the difficulty in obtaining elephant ivory for the manufacture of billiard balls in the 19th century inspired the search for a replacement material, which led to the development of the first industrial plastic.
It's about 350 times as heavy as a Puck (Hockey)
In other words, 0.0000000540 megatonnes is 331.268512222150 times the weight of a Puck (Hockey), and the weight of a Puck (Hockey) is 0.0030186992216435 times that amount.(Ice hockey)
A standard ice hockey puck weighs between 0.00000000015592237718750 megatonnes and 0.000000000170097138750 megatonnes. Hockey pucks can be shot or passed at speeds of up to 160 kph (99 mph) during games.
It's about 350 times as heavy as a Baseball
In other words, 0.0000000540 megatonnes is 371.667111273630 times the weight of a Baseball, and the weight of a Baseball is 0.0026905797410301 times that amount.(MLB rules)
Per Major League Baseball rules, a baseball must weigh between 0.0000000001417476156250 megatonnes and 0.000000000148834996406250 megatonnes. A major league pitcher can throw a baseball at up to 150 kph (91 mph) (with a fastball pitch), with record-setting pitches as fast as 171 kph (106 mph).
It's about 400 times as heavy as a Battery (D)
In other words, the weight of a Battery (D) is 0.0025 times 0.0000000540 megatonnes.(Alkaline)
A "D" size battery weighs 0.0000000001350 megatonnes. The D size battery is the oldest of the modern battery sizes, first invented by the National Carbon Company in 1898.