56565133 has 2 divisors, whose sum is σ = 56565134. Its totient is φ = 56565132.

The previous prime is 56565127. The next prime is 56565169. The reversal of 56565133 is 33156565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52809289 + 3755844 = 7267^2 + 1938^2 .

It is a cyclic number.

It is not a de Polignac number, because 56565133 - 2⁵ = 56565101 is a prime.

It is a super-2 number, since 2×56565133² = 6399228542615378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56565233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28282566 + 28282567.

It is an arithmetic number, because the mean of its divisors is an integer number (28282567).

Almost surely, 2^56565133 is an apocalyptic number.

It is an amenable number.

56565133 is a deficient number, since it is larger than the sum of its proper divisors (1).

56565133 is an equidigital number, since it uses as much as digits as its factorization.

56565133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40500, while the sum is 34.

The square root of 56565133 is about 7520.9795239716. The cubic root of 56565133 is about 383.8689082508.

The spelling of 56565133 in words is "fifty-six million, five hundred sixty-five thousand, one hundred thirty-three".