55105230856 has 32 divisors (see below), whose sum is σ = 117815486040. Its totient is φ = 23937113088.

The previous prime is 55105230847. The next prime is 55105230877. The reversal of 55105230856 is 65803250155.

It can be written as a sum of positive squares in 4 ways, for example, as 30497033956 + 24608196900 = 174634^2 + 156870^2 .

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, 15582291 + ... + 15585826.

Almost surely, 2^55105230856 is an apocalyptic number.

It is an amenable number.

55105230856 is an abundant number, since it is smaller than the sum of its proper divisors (62710255184).

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

55105230856 is a wasteful number, since it uses less digits than its factorization.

55105230856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31168153 (or 31168149 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 40.

The spelling of 55105230856 in words is "fifty-five billion, one hundred five million, two hundred thirty thousand, eight hundred fifty-six".