56423569 has 2 divisors, whose sum is σ = 56423570. Its totient is φ = 56423568.

The previous prime is 56423567. The next prime is 56423651. The reversal of 56423569 is 96532465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48650625 + 7772944 = 6975^2 + 2788^2 .

It is a cyclic number.

It is not a de Polignac number, because 56423569 - 2¹ = 56423567 is a prime.

It is a super-2 number, since 2×56423569² = 6367238277395522, which contains 22 as substring.

Together with 56423567, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56423567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28211784 + 28211785.

It is an arithmetic number, because the mean of its divisors is an integer number (28211785).

Almost surely, 2^56423569 is an apocalyptic number.

It is an amenable number.

56423569 is a deficient number, since it is larger than the sum of its proper divisors (1).

56423569 is an equidigital number, since it uses as much as digits as its factorization.

56423569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 40.

The square root of 56423569 is about 7511.5623541311. The cubic root of 56423569 is about 383.5484080191.

The spelling of 56423569 in words is "fifty-six million, four hundred twenty-three thousand, five hundred sixty-nine".