56563613 has 2 divisors, whose sum is σ = 56563614. Its totient is φ = 56563612.

The previous prime is 56563571. The next prime is 56563651. The reversal of 56563613 is 31636565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51008164 + 5555449 = 7142^2 + 2357^2 .

It is a cyclic number.

It is not a de Polignac number, because 56563613 - 2²² = 52369309 is a prime.

It is a super-2 number, since 2×56563613² = 6398884631227538, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56563813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28281806 + 28281807.

It is an arithmetic number, because the mean of its divisors is an integer number (28281807).

Almost surely, 2^56563613 is an apocalyptic number.

It is an amenable number.

56563613 is a deficient number, since it is larger than the sum of its proper divisors (1).

56563613 is an equidigital number, since it uses as much as digits as its factorization.

56563613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 35.

The square root of 56563613 is about 7520.8784726254. The cubic root of 56563613 is about 383.8654698195.

The spelling of 56563613 in words is "fifty-six million, five hundred sixty-three thousand, six hundred thirteen".