56717723 has 2 divisors, whose sum is σ = 56717724. Its totient is φ = 56717722.

The previous prime is 56717681. The next prime is 56717737. The reversal of 56717723 is 32771765.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56717723 - 2⁶ = 56717659 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (56717123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28358861 + 28358862.

It is an arithmetic number, because the mean of its divisors is an integer number (28358862).

Almost surely, 2^56717723 is an apocalyptic number.

56717723 is a deficient number, since it is larger than the sum of its proper divisors (1).

56717723 is an equidigital number, since it uses as much as digits as its factorization.

56717723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61740, while the sum is 38.

The square root of 56717723 is about 7531.1169822278. The cubic root of 56717723 is about 384.2137730240.

The spelling of 56717723 in words is "fifty-six million, seven hundred seventeen thousand, seven hundred twenty-three".