56440957 has 4 divisors (see below), whose sum is σ = 56871936. Its totient is φ = 56009980.

The previous prime is 56440949. The next prime is 56440973. The reversal of 56440957 is 75904465.

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 56440957 - 2³ = 56440949 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 (56440927) 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, 215293 + ... + 215554.

It is an arithmetic number, because the mean of its divisors is an integer number (14217984).

Almost surely, 2^56440957 is an apocalyptic number.

It is an amenable number.

56440957 is a deficient number, since it is larger than the sum of its proper divisors (430979).

56440957 is a wasteful number, since it uses less digits than its factorization.

56440957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430978.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 56440957 is about 7512.7196806483. The cubic root of 56440957 is about 383.5878032274.

The spelling of 56440957 in words is "fifty-six million, four hundred forty thousand, nine hundred fifty-seven".