56562491 has 2 divisors, whose sum is σ = 56562492. Its totient is φ = 56562490.

The previous prime is 56562469. The next prime is 56562511. The reversal of 56562491 is 19426565.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56562491 - 2⁶ = 56562427 is a prime.

It is not a weakly prime, because it can be changed into another prime (56562421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28281245 + 28281246.

It is an arithmetic number, because the mean of its divisors is an integer number (28281246).

Almost surely, 2^56562491 is an apocalyptic number.

56562491 is a deficient number, since it is larger than the sum of its proper divisors (1).

56562491 is an equidigital number, since it uses as much as digits as its factorization.

56562491 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 56562491 is about 7520.8038799054. The cubic root of 56562491 is about 383.8629316748.

The spelling of 56562491 in words is "fifty-six million, five hundred sixty-two thousand, four hundred ninety-one".