56715427 has 2 divisors, whose sum is σ = 56715428. Its totient is φ = 56715426.

The previous prime is 56715391. The next prime is 56715431. The reversal of 56715427 is 72451765.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56715427 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56715467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28357713 + 28357714.

It is an arithmetic number, because the mean of its divisors is an integer number (28357714).

Almost surely, 2^56715427 is an apocalyptic number.

56715427 is a deficient number, since it is larger than the sum of its proper divisors (1).

56715427 is an equidigital number, since it uses as much as digits as its factorization.

56715427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58800, while the sum is 37.

The square root of 56715427 is about 7530.9645464575. The cubic root of 56715427 is about 384.2085884792.

The spelling of 56715427 in words is "fifty-six million, seven hundred fifteen thousand, four hundred twenty-seven".