56562551 has 2 divisors, whose sum is σ = 56562552. Its totient is φ = 56562550.

The previous prime is 56562521. The next prime is 56562577. The reversal of 56562551 is 15526565.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56562551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56562511) 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, 28281275 + 28281276.

It is an arithmetic number, because the mean of its divisors is an integer number (28281276).

Almost surely, 2^56562551 is an apocalyptic number.

56562551 is a deficient number, since it is larger than the sum of its proper divisors (1).

56562551 is an equidigital number, since it uses as much as digits as its factorization.

56562551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45000, while the sum is 35.

The square root of 56562551 is about 7520.8078688396. The cubic root of 56562551 is about 383.8630674053.

The spelling of 56562551 in words is "fifty-six million, five hundred sixty-two thousand, five hundred fifty-one".