55555050555 has 32 divisors (see below), whose sum is σ = 101950494720. Its totient is φ = 28673572320.

The previous prime is 55555050527. The next prime is 55555050581. The reversal of 55555050555 is 55505055555.

It is not a de Polignac number, because 55555050555 - 2⁷ = 55555050427 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 55555050555.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6633217 + ... + 6641586.

It is an arithmetic number, because the mean of its divisors is an integer number (3185952960).

Almost surely, 2^55555050555 is an apocalyptic number.

55555050555 is a deficient number, since it is larger than the sum of its proper divisors (46395444165).

55555050555 is a wasteful number, since it uses less digits than its factorization.

55555050555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13274848 (or 13274842 counting only the distinct ones).

The product of its (nonzero) digits is 1953125, while the sum is 45.

Subtracting from 55555050555 its reverse (55505055555), we obtain a triangular number (49995000 = T₉₉₉₉).

The spelling of 55555050555 in words is "fifty-five billion, five hundred fifty-five million, fifty thousand, five hundred fifty-five".