56544569 has 2 divisors, whose sum is σ = 56544570. Its totient is φ = 56544568.

The previous prime is 56544539. The next prime is 56544571. The reversal of 56544569 is 96544565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31494544 + 25050025 = 5612^2 + 5005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56544569 is a prime.

It is a super-2 number, since 2×56544569² = 6394576566791522, which contains 22 as substring.

Together with 56544571, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56544539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28272284 + 28272285.

It is an arithmetic number, because the mean of its divisors is an integer number (28272285).

Almost surely, 2^56544569 is an apocalyptic number.

It is an amenable number.

56544569 is a deficient number, since it is larger than the sum of its proper divisors (1).

56544569 is an equidigital number, since it uses as much as digits as its factorization.

56544569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648000, while the sum is 44.

The square root of 56544569 is about 7519.6122905373. The cubic root of 56544569 is about 383.8223846734.

The spelling of 56544569 in words is "fifty-six million, five hundred forty-four thousand, five hundred sixty-nine".