56513866 has 16 divisors (see below), whose sum is σ = 92311200. Its totient is φ = 25846128.

The previous prime is 56513851. The next prime is 56513903. The reversal of 56513866 is 66831565.

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, 24540 + ... + 26743.

It is an arithmetic number, because the mean of its divisors is an integer number (5769450).

Almost surely, 2^56513866 is an apocalyptic number.

56513866 is a deficient number, since it is larger than the sum of its proper divisors (35797334).

56513866 is a wasteful number, since it uses less digits than its factorization.

56513866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51333.

The product of its digits is 129600, while the sum is 40.

The square root of 56513866 is about 7517.5704852033. The cubic root of 56513866 is about 383.7529018302.

The spelling of 56513866 in words is "fifty-six million, five hundred thirteen thousand, eight hundred sixty-six".