It is a happy number.
It is a Curzon number.
It is a congruent number.
It is an unprimeable number.
Almost surely, 2520350350 is an apocalyptic number.
520350350 is a gapful number since it is divisible by the number (50) formed by its first and last digit.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
520350350 is a wasteful number, since it uses less digits than its factorization.
520350350 is an evil number, because the sum of its binary digits is even.
The square root of 520350350 is about 22811.1891404197. The cubic root of 520350350 is about 804.3257087724.
The spelling of 520350350 in words is "five hundred twenty million, three hundred fifty thousand, three hundred fifty".