56943517 has 2 divisors, whose sum is σ = 56943518. Its totient is φ = 56943516.

The previous prime is 56943511. The next prime is 56943521. The reversal of 56943517 is 71534965.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48246916 + 8696601 = 6946^2 + 2949^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56943517 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 56943517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56943511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28471758 + 28471759.

It is an arithmetic number, because the mean of its divisors is an integer number (28471759).

Almost surely, 2^56943517 is an apocalyptic number.

It is an amenable number.

56943517 is a deficient number, since it is larger than the sum of its proper divisors (1).

56943517 is an equidigital number, since it uses as much as digits as its factorization.

56943517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 40.

The square root of 56943517 is about 7546.0928300678. The cubic root of 56943517 is about 384.7229512972.

The spelling of 56943517 in words is "fifty-six million, nine hundred forty-three thousand, five hundred seventeen".