56507555 has 16 divisors (see below), whose sum is σ = 73198944. Its totient is φ = 41629440.

The previous prime is 56507543. The next prime is 56507557. The reversal of 56507555 is 55570565.

It is not a de Polignac number, because 56507555 - 2²⁰ = 55458979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56507557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37415 + ... + 38895.

It is an arithmetic number, because the mean of its divisors is an integer number (4574934).

Almost surely, 2^56507555 is an apocalyptic number.

56507555 is a deficient number, since it is larger than the sum of its proper divisors (16691389).

56507555 is a wasteful number, since it uses less digits than its factorization.

56507555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2086.

The product of its (nonzero) digits is 131250, while the sum is 38.

The square root of 56507555 is about 7517.1507235122. The cubic root of 56507555 is about 383.7386165177.

The spelling of 56507555 in words is "fifty-six million, five hundred seven thousand, five hundred fifty-five".