56718719 has 2 divisors, whose sum is σ = 56718720. Its totient is φ = 56718718.

The previous prime is 56718679. The next prime is 56718733. The reversal of 56718719 is 91781765.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56718719 - 2⁸ = 56718463 is a prime.

It is a super-2 number, since 2×56718719² = 6434026170001922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56718719.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56714719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28359359 + 28359360.

It is an arithmetic number, because the mean of its divisors is an integer number (28359360).

Almost surely, 2^56718719 is an apocalyptic number.

56718719 is a deficient number, since it is larger than the sum of its proper divisors (1).

56718719 is an equidigital number, since it uses as much as digits as its factorization.

56718719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 44.

The square root of 56718719 is about 7531.1831075867. The cubic root of 56718719 is about 384.2160220252.

The spelling of 56718719 in words is "fifty-six million, seven hundred eighteen thousand, seven hundred nineteen".