It's about 300 times the number of Escalators in the State of Wyoming.
In other words, the count of Escalators in the State of Wyoming is 0.003 times 520.(2013 figures)
There are only two escalators in the State of Wyoming (although there are apparently plenty of elevators). It is speculated that the lack of escalators is due to the older age of the buildings and the abundance of cheap land resulting in single-story structures. At the time the last count of escalators was made, the state had a population of just 576,000 people.
It's about 100 times the number of Living U.S. Presidents.
In other words, the count of Living U.S. Presidents is 0.01 times 520.(a.k.a. Presidents of the United States; a.k.a. Presidents of the United States of America; a.k.a. POTUS), (2016 figures) (including current)
As of this writing, there are five living United States Presidents — President Carter, President Clinton, President Obama, and the two Presidents Bush. At no point in U.S. history have their been more than six (6) living presidents, this circumstance having occurred three times.
It's about 60 times the number of Symphonies Composed by Beethoven.
In other words, 520 is 57.77777777780 times the count of Symphonies Composed by Beethoven, and the count of Symphonies Composed by Beethoven is 0.0173076923077 times that amount.(a.k.a. Ludwig van Beethoven)
It's about forty times the number of Living Kings and Queens.
In other words, the count of Living Kings and Queens is 0.029 times 520.(2015 figures) (distinct Monarchs)
It's about nineteen times the number of Countries in the European Union.
In other words, the count of Countries in the European Union is 0.053 times 520.(a.k.a. EU) (2016 figures)
It's about eleven 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 0.091 times 520.(Carcharodon carcharias) (average; including developing rows)
A Great White Shark has 48 exposed teeth on their upper and lower jaws. Behind these exposed teeth are developing teeth — up to 300 in about 5 rows. The sharks will continuously lose and replace the exposed teeth throughout their lives.
It's about nine-and-a-half times the number of Countries in Africa.
In other words, the count of Countries in Africa is 0.10 times 520.(2016 figures) (sovereign states recognized by the UN only)