521368804 has 12 divisors (see below), whose sum is σ = 995340528. Its totient is φ = 236985800.

The previous prime is 521368789. The next prime is 521368811. The reversal of 521368804 is 408863125.

It is a happy number.

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, 5924602 + ... + 5924689.

It is an arithmetic number, because the mean of its divisors is an integer number (82945044).

Almost surely, 2^521368804 is an apocalyptic number.

It is an amenable number.

521368804 is a deficient number, since it is larger than the sum of its proper divisors (473971724).

521368804 is a wasteful number, since it uses less digits than its factorization.

521368804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11849306 (or 11849304 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 521368804 is about 22833.5017901328. The cubic root of 521368804 is about 804.8501213964.

The spelling of 521368804 in words is "five hundred twenty-one million, three hundred sixty-eight thousand, eight hundred four".