56571727 has 2 divisors, whose sum is σ = 56571728. Its totient is φ = 56571726.

The previous prime is 56571679. The next prime is 56571761. The reversal of 56571727 is 72717565.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56571727 - 2¹¹ = 56569679 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56571727.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56571527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28285863 + 28285864.

It is an arithmetic number, because the mean of its divisors is an integer number (28285864).

Almost surely, 2^56571727 is an apocalyptic number.

56571727 is a deficient number, since it is larger than the sum of its proper divisors (1).

56571727 is an equidigital number, since it uses as much as digits as its factorization.

56571727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102900, while the sum is 40.

The square root of 56571727 is about 7521.4178849470. The cubic root of 56571727 is about 383.8838239954.

The spelling of 56571727 in words is "fifty-six million, five hundred seventy-one thousand, seven hundred twenty-seven".