520564904 has 16 divisors (see below), whose sum is σ = 977615520. Its totient is φ = 259867440.

The previous prime is 520564901. The next prime is 520564921. The reversal of 520564904 is 409465025.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (520564901) 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, 46514 + ... + 56609.

It is an arithmetic number, because the mean of its divisors is an integer number (61100970).

Almost surely, 2^520564904 is an apocalyptic number.

It is an amenable number.

520564904 is a deficient number, since it is larger than the sum of its proper divisors (457050616).

520564904 is a wasteful number, since it uses less digits than its factorization.

520564904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103760 (or 103756 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 520564904 is about 22815.8914794053. The cubic root of 520564904 is about 804.4362417271.

The spelling of 520564904 in words is "five hundred twenty million, five hundred sixty-four thousand, nine hundred four".