56917319 has 2 divisors, whose sum is σ = 56917320. Its totient is φ = 56917318.

The previous prime is 56917291. The next prime is 56917321. The reversal of 56917319 is 91371965.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56917319 - 2¹⁶ = 56851783 is a prime.

It is a super-2 number, since 2×56917319² = 6479162404295522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 56917321, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56917339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28458659 + 28458660.

It is an arithmetic number, because the mean of its divisors is an integer number (28458660).

Almost surely, 2^56917319 is an apocalyptic number.

56917319 is a deficient number, since it is larger than the sum of its proper divisors (1).

56917319 is an equidigital number, since it uses as much as digits as its factorization.

56917319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51030, while the sum is 41.

The square root of 56917319 is about 7544.3567651590. The cubic root of 56917319 is about 384.6639424262.

The spelling of 56917319 in words is "fifty-six million, nine hundred seventeen thousand, three hundred nineteen".