520291916 has 12 divisors (see below), whose sum is σ = 931685832. Its totient is φ = 254095968.

The previous prime is 520291903. The next prime is 520291943. The reversal of 520291916 is 619192025.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1512305 + ... + 1512648.

It is an arithmetic number, because the mean of its divisors is an integer number (77640486).

Almost surely, 2^520291916 is an apocalyptic number.

It is an amenable number.

520291916 is a deficient number, since it is larger than the sum of its proper divisors (411393916).

520291916 is a wasteful number, since it uses less digits than its factorization.

520291916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3025000 (or 3024998 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 520291916 is about 22809.9082856552. The cubic root of 520291916 is about 804.2955997456.

The spelling of 520291916 in words is "five hundred twenty million, two hundred ninety-one thousand, nine hundred sixteen".