52521664 has 28 divisors (see below), whose sum is σ = 112241584. Its totient is φ = 24240384.

The previous prime is 52521647. The next prime is 52521683. The reversal of 52521664 is 46612525.

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, 30732 + ... + 32395.

It is an arithmetic number, because the mean of its divisors is an integer number (4008628).

Almost surely, 2^52521664 is an apocalyptic number.

It is an amenable number.

52521664 is an abundant number, since it is smaller than the sum of its proper divisors (59719920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52521664 is a wasteful number, since it uses less digits than its factorization.

52521664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63152 (or 63142 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 52521664 is about 7247.1831769316. The cubic root of 52521664 is about 374.4951167008.

The spelling of 52521664 in words is "fifty-two million, five hundred twenty-one thousand, six hundred sixty-four".