56312917 has 4 divisors (see below), whose sum is σ = 56671756. Its totient is φ = 55954080.

The previous prime is 56312887. The next prime is 56312953. The reversal of 56312917 is 71921365.

56312917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19236996 + 37075921 = 4386^2 + 6089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56312917 is a prime.

It is a super-2 number, since 2×56312917² = 6342289242097778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56312317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179184 + ... + 179497.

It is an arithmetic number, because the mean of its divisors is an integer number (14167939).

Almost surely, 2^56312917 is an apocalyptic number.

It is an amenable number.

56312917 is a deficient number, since it is larger than the sum of its proper divisors (358839).

56312917 is a wasteful number, since it uses less digits than its factorization.

56312917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358838.

The product of its digits is 11340, while the sum is 34.

The square root of 56312917 is about 7504.1932944188. The cubic root of 56312917 is about 383.2975189392.

The spelling of 56312917 in words is "fifty-six million, three hundred twelve thousand, nine hundred seventeen".