56108557 has 2 divisors, whose sum is σ = 56108558. Its totient is φ = 56108556.

The previous prime is 56108527. The next prime is 56108567. The reversal of 56108557 is 75580165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41139396 + 14969161 = 6414^2 + 3869^2 .

It is a cyclic number.

It is not a de Polignac number, because 56108557 - 2¹¹ = 56106509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56108527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28054278 + 28054279.

It is an arithmetic number, because the mean of its divisors is an integer number (28054279).

Almost surely, 2^56108557 is an apocalyptic number.

It is an amenable number.

56108557 is a deficient number, since it is larger than the sum of its proper divisors (1).

56108557 is an equidigital number, since it uses as much as digits as its factorization.

56108557 is an odious number, because the sum of its binary digits is odd.

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

The square root of 56108557 is about 7490.5645314622. The cubic root of 56108557 is about 382.8332937321.

It can be divided in two parts, 56108 and 557, that added together give a palindrome (56665).

The spelling of 56108557 in words is "fifty-six million, one hundred eight thousand, five hundred fifty-seven".