56571560 has 32 divisors (see below), whose sum is σ = 129448800. Its totient is φ = 22244160.

The previous prime is 56571553. The next prime is 56571587. The reversal of 56571560 is 6517565.

It is a self number, because there is not a number n which added to its sum of digits gives 56571560.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9626 + ... + 14345.

It is an arithmetic number, because the mean of its divisors is an integer number (4045275).

Almost surely, 2^56571560 is an apocalyptic number.

It is an amenable number.

56571560 is an abundant number, since it is smaller than the sum of its proper divisors (72877240).

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

56571560 is a wasteful number, since it uses less digits than its factorization.

56571560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24041 (or 24037 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 56571560 is about 7521.4067833086. The cubic root of 56571560 is about 383.8834462527.

The spelling of 56571560 in words is "fifty-six million, five hundred seventy-one thousand, five hundred sixty".