520513816 has 16 divisors (see below), whose sum is σ = 1027330200. Its totient is φ = 246559104.

The previous prime is 520513811. The next prime is 520513841. The reversal of 520513816 is 618315025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520513811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1712065 + ... + 1712368.

Almost surely, 2^520513816 is an apocalyptic number.

It is an amenable number.

520513816 is a deficient number, since it is larger than the sum of its proper divisors (506816384).

520513816 is a wasteful number, since it uses less digits than its factorization.

520513816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3424458 (or 3424454 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 520513816 is about 22814.7718813930. The cubic root of 520513816 is about 804.4099251988.

The spelling of 520513816 in words is "five hundred twenty million, five hundred thirteen thousand, eight hundred sixteen".