56124569 has 2 divisors, whose sum is σ = 56124570. Its totient is φ = 56124568.

The previous prime is 56124559. The next prime is 56124571. The reversal of 56124569 is 96542165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51337225 + 4787344 = 7165^2 + 2188^2 .

It is a cyclic number.

It is not a de Polignac number, because 56124569 - 2⁴ = 56124553 is a prime.

It is a super-2 number, since 2×56124569² = 6299934490871522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 56124571, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (56124559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28062284 + 28062285.

It is an arithmetic number, because the mean of its divisors is an integer number (28062285).

Almost surely, 2^56124569 is an apocalyptic number.

It is an amenable number.

56124569 is a deficient number, since it is larger than the sum of its proper divisors (1).

56124569 is an equidigital number, since it uses as much as digits as its factorization.

56124569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 38.

The square root of 56124569 is about 7491.6332665181. The cubic root of 56124569 is about 382.8697073323.

The spelling of 56124569 in words is "fifty-six million, one hundred twenty-four thousand, five hundred sixty-nine".