56315917 has 16 divisors (see below), whose sum is σ = 69603840. Its totient is φ = 44460288.

The previous prime is 56315911. The next prime is 56315921. The reversal of 56315917 is 71951365.

It is a cyclic number.

It is not a de Polignac number, because 56315917 - 2²³ = 47927309 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 (56315911) 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, 559 + ... + 10627.

It is an arithmetic number, because the mean of its divisors is an integer number (4350240).

Almost surely, 2^56315917 is an apocalyptic number.

It is an amenable number.

56315917 is a deficient number, since it is larger than the sum of its proper divisors (13287923).

56315917 is a wasteful number, since it uses less digits than its factorization.

56315917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10140.

The product of its digits is 28350, while the sum is 37.

The square root of 56315917 is about 7504.3931799980. The cubic root of 56315917 is about 383.3043253832.

The spelling of 56315917 in words is "fifty-six million, three hundred fifteen thousand, nine hundred seventeen".