56570971 has 2 divisors, whose sum is σ = 56570972. Its totient is φ = 56570970.

The previous prime is 56570963. The next prime is 56570989. The reversal of 56570971 is 17907565.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56570971 - 2³ = 56570963 is a prime.

It is not a weakly prime, because it can be changed into another prime (56570471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28285485 + 28285486.

It is an arithmetic number, because the mean of its divisors is an integer number (28285486).

Almost surely, 2^56570971 is an apocalyptic number.

56570971 is a deficient number, since it is larger than the sum of its proper divisors (1).

56570971 is an equidigital number, since it uses as much as digits as its factorization.

56570971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 66150, while the sum is 40.

The square root of 56570971 is about 7521.3676282974. The cubic root of 56570971 is about 383.8821139688.

The spelling of 56570971 in words is "fifty-six million, five hundred seventy thousand, nine hundred seventy-one".