56656261 has 4 divisors (see below), whose sum is σ = 57064000. Its totient is φ = 56248524.

The previous prime is 56656247. The next prime is 56656273. The reversal of 56656261 is 16265665.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56656261 - 2⁷ = 56656133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56656261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56656211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203661 + ... + 203938.

It is an arithmetic number, because the mean of its divisors is an integer number (14266000).

Almost surely, 2^56656261 is an apocalyptic number.

It is an amenable number.

56656261 is a deficient number, since it is larger than the sum of its proper divisors (407739).

56656261 is a wasteful number, since it uses less digits than its factorization.

56656261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407738.

The product of its digits is 64800, while the sum is 37.

The square root of 56656261 is about 7527.0353393617. The cubic root of 56656261 is about 384.0749388069.

The spelling of 56656261 in words is "fifty-six million, six hundred fifty-six thousand, two hundred sixty-one".