55550555575551 has 12 divisors (see below), whose sum is σ = 80245747842000. Its totient is φ = 37030908430080.

The previous prime is 55550555575507. The next prime is 55550555575573. The reversal of 55550555575551 is 15557555505555.

55550555575551 is a `hidden beast` number, since 5 + 5 + 5 + 5 + 0 + 5 + 5 + 5 + 5 + 75 + 551 = 666.

It is not a de Polignac number, because 55550555575551 - 2²⁵ = 55550522021119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55550555575751) 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, 232814715 + ... + 233053196.

It is an arithmetic number, because the mean of its divisors is an integer number (6687145653500).

Almost surely, 2^{55550555575551} is an apocalyptic number.

55550555575551 is a deficient number, since it is larger than the sum of its proper divisors (24695192266449).

55550555575551 is a wasteful number, since it uses less digits than its factorization.

55550555575551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465881166 (or 465881163 counting only the distinct ones).

The product of its (nonzero) digits is 341796875, while the sum is 63.

The spelling of 55550555575551 in words is "fifty-five trillion, five hundred fifty billion, five hundred fifty-five million, five hundred seventy-five thousand, five hundred fifty-one".