56505555 has 12 divisors (see below), whose sum is σ = 97943040. Its totient is φ = 30136272.

The previous prime is 56505551. The next prime is 56505557. The reversal of 56505555 is 55550565.

56505555 is a `hidden beast` number, since 56 + 50 + 5 + 555 = 666.

It is not a de Polignac number, because 56505555 - 2² = 56505551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56505551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 627795 + ... + 627884.

It is an arithmetic number, because the mean of its divisors is an integer number (8161920).

Almost surely, 2^56505555 is an apocalyptic number.

56505555 is a deficient number, since it is larger than the sum of its proper divisors (41437485).

56505555 is a wasteful number, since it uses less digits than its factorization.

56505555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255690 (or 1255687 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 36.

The square root of 56505555 is about 7517.0176932079. The cubic root of 56505555 is about 383.7340891804.

The spelling of 56505555 in words is "fifty-six million, five hundred five thousand, five hundred fifty-five".