56516717 has 2 divisors, whose sum is σ = 56516718. Its totient is φ = 56516716.

The previous prime is 56516699. The next prime is 56516729. The reversal of 56516717 is 71761565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55145476 + 1371241 = 7426^2 + 1171^2 .

It is a cyclic number.

It is not a de Polignac number, because 56516717 - 2⁸ = 56516461 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56516767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28258358 + 28258359.

It is an arithmetic number, because the mean of its divisors is an integer number (28258359).

Almost surely, 2^56516717 is an apocalyptic number.

It is an amenable number.

56516717 is a deficient number, since it is larger than the sum of its proper divisors (1).

56516717 is an equidigital number, since it uses as much as digits as its factorization.

56516717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44100, while the sum is 38.

The square root of 56516717 is about 7517.7601052441. The cubic root of 56516717 is about 383.7593548845.

The spelling of 56516717 in words is "fifty-six million, five hundred sixteen thousand, seven hundred seventeen".