55556856 has 24 divisors (see below), whose sum is σ = 150466680. Its totient is φ = 18518928.

The previous prime is 55556843. The next prime is 55556857. The reversal of 55556856 is 65865555.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55556857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 385740 + ... + 385883.

It is an arithmetic number, because the mean of its divisors is an integer number (6269445).

Almost surely, 2^55556856 is an apocalyptic number.

It is an amenable number.

55556856 is an abundant number, since it is smaller than the sum of its proper divisors (94909824).

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

55556856 is a wasteful number, since it uses less digits than its factorization.

55556856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771635 (or 771628 counting only the distinct ones).

The product of its digits is 900000, while the sum is 45.

The square root of 55556856 is about 7453.6471609542. The cubic root of 55556856 is about 381.5743914358.

The spelling of 55556856 in words is "fifty-five million, five hundred fifty-six thousand, eight hundred fifty-six".