It's about 550 times the number of Keys on a Piano.
It's about 700 times the number of Submarines in the US Navy.
In other words, 50,000 is 690 times the count of Submarines in the US Navy, and the count of Submarines in the US Navy is 0.0014 times that amount.(a.k.a. Subs) (includes all types, all classes) (2015 figures)
The United States Navy maintains a fleet of 72 active submarines. A typical submarine goes to sea with a crew of about 140.
It's about one-seven-hundred-fiftieth the number of people in The State of California.
In other words, 50,000 is 0.001304 times the count of people in The State of California, and the count of people in The State of California is 766.90 times that amount.(2014 figures) (Department of Finance estimate)
California, the most populous state in the United States, is home to 38,340,000 people (larger than the population of the entire country of Canada, with 35,540,419 people). Over ten percent of the population — 3,904,657 people — reside in the city of Los Angeles.
It's about 950 times the number of Countries in Africa.
In other words, the count of Countries in Africa is 0.0011 times 50,000.(2016 figures) (sovereign states recognized by the UN only)
It's about 1,000 times the number of Teeth in a Great White Shark's Mouth.
In other words, the count of Teeth in a Great White Shark's Mouth is 0.001 times 50,000.(Carcharodon carcharias) (average; including developing rows)
It's about one-one-thousand-five-hundredth the number of Copies of Michael Jackson's Thriller Sold (2011).
In other words, the count of Copies of Michael Jackson's Thriller Sold (2011) is 1,300 times 50,000.(sales figures as of 1990) (1982 release)
Michael Jackson's Thriller, the best-selling album of all time, has sold over 66 million copies since its release. Following its release in 1982, the album â€” which contains hits like "Thriller," "Beat It," and "Billie Jean" â€” won eight (8) Grammy Awards in 1984.
It's about one-one-thousand-five-hundredth the number of Copies of Wii Sports Sold.
In other words, 50,000 is 0.0006047 times the count of Copies of Wii Sports Sold, and the count of Copies of Wii Sports Sold is 1,654 times that amount.(a.k.a. Wii スポーツ, a.k.a. Wi Supotsu) (2006 edition) (sales figures as of March 31, 2015)