56564279 has 2 divisors, whose sum is σ = 56564280. Its totient is φ = 56564278.

The previous prime is 56564267. The next prime is 56564293. The reversal of 56564279 is 97246565.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56564279 - 2²⁰ = 55515703 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 (56564579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28282139 + 28282140.

It is an arithmetic number, because the mean of its divisors is an integer number (28282140).

Almost surely, 2^56564279 is an apocalyptic number.

56564279 is a deficient number, since it is larger than the sum of its proper divisors (1).

56564279 is an equidigital number, since it uses as much as digits as its factorization.

56564279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 44.

The square root of 56564279 is about 7520.9227492376. The cubic root of 56564279 is about 383.8669764029.

The spelling of 56564279 in words is "fifty-six million, five hundred sixty-four thousand, two hundred seventy-nine".