56708551 has 2 divisors, whose sum is σ = 56708552. Its totient is φ = 56708550.

The previous prime is 56708537. The next prime is 56708563. The reversal of 56708551 is 15580765.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56708551 - 2⁷ = 56708423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56708551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56708581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28354275 + 28354276.

It is an arithmetic number, because the mean of its divisors is an integer number (28354276).

Almost surely, 2^56708551 is an apocalyptic number.

56708551 is a deficient number, since it is larger than the sum of its proper divisors (1).

56708551 is an equidigital number, since it uses as much as digits as its factorization.

56708551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42000, while the sum is 37.

The square root of 56708551 is about 7530.5080173917. The cubic root of 56708551 is about 384.1930611047.

The spelling of 56708551 in words is "fifty-six million, seven hundred eight thousand, five hundred fifty-one".