56656291 has 16 divisors (see below), whose sum is σ = 63949824. Its totient is φ = 49903744.

The previous prime is 56656273. The next prime is 56656297. The reversal of 56656291 is 19265665.

It is not a de Polignac number, because 56656291 - 2⁷ = 56656163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56656297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16836 + ... + 19918.

It is an arithmetic number, because the mean of its divisors is an integer number (3996864).

Almost surely, 2^56656291 is an apocalyptic number.

56656291 is a deficient number, since it is larger than the sum of its proper divisors (7293533).

56656291 is a wasteful number, since it uses less digits than its factorization.

56656291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3170.

The product of its digits is 97200, while the sum is 40.

The square root of 56656291 is about 7527.0373321779. The cubic root of 56656291 is about 384.0750065973.

The spelling of 56656291 in words is "fifty-six million, six hundred fifty-six thousand, two hundred ninety-one".