56565169 has 2 divisors, whose sum is σ = 56565170. Its totient is φ = 56565168.

The previous prime is 56565133. The next prime is 56565181. The reversal of 56565169 is 96156565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49210225 + 7354944 = 7015^2 + 2712^2 .

It is a cyclic number.

It is not a de Polignac number, because 56565169 - 2¹⁷ = 56434097 is a prime.

It is a super-2 number, since 2×56565169² = 6399236687997122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56562169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28282584 + 28282585.

It is an arithmetic number, because the mean of its divisors is an integer number (28282585).

Almost surely, 2^56565169 is an apocalyptic number.

It is an amenable number.

56565169 is a deficient number, since it is larger than the sum of its proper divisors (1).

56565169 is an equidigital number, since it uses as much as digits as its factorization.

56565169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 243000, while the sum is 43.

The square root of 56565169 is about 7520.9819172765. The cubic root of 56565169 is about 383.8689896866.

The spelling of 56565169 in words is "fifty-six million, five hundred sixty-five thousand, one hundred sixty-nine".