55887558 has 16 divisors (see below), whose sum is σ = 112339200. Its totient is φ = 18535176.

The previous prime is 55887527. The next prime is 55887563. The reversal of 55887558 is 85578855.

55887558 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 55887558.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22210 + ... + 24597.

It is an arithmetic number, because the mean of its divisors is an integer number (7021200).

Almost surely, 2^55887558 is an apocalyptic number.

55887558 is an abundant number, since it is smaller than the sum of its proper divisors (56451642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55887558 is a wasteful number, since it uses less digits than its factorization.

55887558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47011.

The product of its digits is 2240000, while the sum is 51.

The square root of 55887558 is about 7475.7981513682. The cubic root of 55887558 is about 382.3300009228.

The spelling of 55887558 in words is "fifty-five million, eight hundred eighty-seven thousand, five hundred fifty-eight".