56975231 has 2 divisors, whose sum is σ = 56975232. Its totient is φ = 56975230.

The previous prime is 56975221. The next prime is 56975249. The reversal of 56975231 is 13257965.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56975231 is a prime.

It is a super-2 number, since 2×56975231² = 6492353895006722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56975221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28487615 + 28487616.

It is an arithmetic number, because the mean of its divisors is an integer number (28487616).

Almost surely, 2^56975231 is an apocalyptic number.

56975231 is a deficient number, since it is larger than the sum of its proper divisors (1).

56975231 is an equidigital number, since it uses as much as digits as its factorization.

56975231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56700, while the sum is 38.

The square root of 56975231 is about 7548.1938899316. The cubic root of 56975231 is about 384.7943603000.

The spelling of 56975231 in words is "fifty-six million, nine hundred seventy-five thousand, two hundred thirty-one".