56942569 has 2 divisors, whose sum is σ = 56942570. Its totient is φ = 56942568.

The previous prime is 56942551. The next prime is 56942591. The reversal of 56942569 is 96524965.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46785600 + 10156969 = 6840^2 + 3187^2 .

It is a cyclic number.

It is not a de Polignac number, because 56942569 - 2⁷ = 56942441 is a prime.

It is a super-2 number, since 2×56942569² = 6484912328639522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56942539) 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, 28471284 + 28471285.

It is an arithmetic number, because the mean of its divisors is an integer number (28471285).

Almost surely, 2^56942569 is an apocalyptic number.

It is an amenable number.

56942569 is a deficient number, since it is larger than the sum of its proper divisors (1).

56942569 is an equidigital number, since it uses as much as digits as its factorization.

56942569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 46.

The square root of 56942569 is about 7546.0300158428. The cubic root of 56942569 is about 384.7208163198.

The spelling of 56942569 in words is "fifty-six million, nine hundred forty-two thousand, five hundred sixty-nine".