It's about the number of Stores in the Mall of America.
It's about one-and-one-tenth times the number of Olympic Gold Medals Won by the Soviet Union.
In other words, the count of Olympic Gold Medals Won by the Soviet Union is 0.909 times 520.(a.k.a. Union of Soviet Socialist Republics, a.k.a. USSR, a.k.a. Сою́з Сове́тских Социалисти́ческих Респу́блик, a.k.a. CCCP) (a.k.a. Olympic Games, a.k.a. Jeux olympiques) (Summer and Winter Games grand totals; excluding Russian Federation Medals) (1952 thru 1988 figures)
During its 19 appearances in the Summer and Winter Olympic Games, the Soviet Union was awarded 473 gold medals. The Union holds the as-yet-unbroken record for gold medals in gymnastics, with 72.
It's about four-fifths the number of Members of Parliament (The U.K.).
In other words, the count of Members of Parliament (The U.K.) is 1.3 times 520.(a.k.a. MPs) (2016 figures) (formally "Members of the House of Commons of the Parliament of the United Kingdom of Great Britain and Northern Ireland")
There are 650 Members of Parliament in the U.K. The Commons Chamber in the Palace of Westminster only has seating for 427 members, so those arriving late to House debates must stay standing.
It's about seven-tenths the number of Kernels on an Ear of Corn.
In other words, the count of Kernels on an Ear of Corn is 1 times 520.(Corn, a.k.a. Maize; Kernel a.k.a. Seed) (average) (for Dent Corn, a.k.a. field corn)
An average ear of dent corn, the kind grown to feed to animals and to make other foods, has an average of 800 kernels. Each acre of corn yields about 15,900 ears of corn.
It's about seven-tenths the number of Inductees in the Rock and Roll Hall of Fame.
In other words, 520 is 0.694 times the count of Inductees in the Rock and Roll Hall of Fame, and the count of Inductees in the Rock and Roll Hall of Fame is 1.44 times that amount.(November, 2015 figures) (including individuals and groups)
It's about one-and-a-half times the number of Sesame Seeds on a Big Mac bun.
In other words, the count of Sesame Seeds on a Big Mac bun is 0.67 times 520.(McDonald's sandwich; approximate figures)
It's about three-fifths the number of Population of Vatican City.
In other words, 520 is 0.618 times the count of Population of Vatican City, and the count of Population of Vatican City is 1.62 times that amount.(a.k.a. Vatican City State, a.k.a. Stato della Città del Vaticano, a.k.a. Status Civitatis Vaticanae) (Rome, Italy) (2014 estimates; permanent residents only)