56709957 has 4 divisors (see below), whose sum is σ = 75613280. Its totient is φ = 37806636.

The previous prime is 56709923. The next prime is 56709959. The reversal of 56709957 is 75990765.

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 not a de Polignac number, because 56709957 - 2⁸ = 56709701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56709959) 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, 9451657 + ... + 9451662.

It is an arithmetic number, because the mean of its divisors is an integer number (18903320).

Almost surely, 2^56709957 is an apocalyptic number.

It is an amenable number.

56709957 is a deficient number, since it is larger than the sum of its proper divisors (18903323).

56709957 is a wasteful number, since it uses less digits than its factorization.

56709957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18903322.

The product of its (nonzero) digits is 595350, while the sum is 48.

The square root of 56709957 is about 7530.6013704086. The cubic root of 56709957 is about 384.1962362342.

The spelling of 56709957 in words is "fifty-six million, seven hundred nine thousand, nine hundred fifty-seven".