55501100556 has 24 divisors (see below), whose sum is σ = 141275529024. Its totient is φ = 16818515280.

The previous prime is 55501100549. The next prime is 55501100569. The reversal of 55501100556 is 65500110555.

55501100556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210231310 + ... + 210231573.

It is an arithmetic number, because the mean of its divisors is an integer number (5886480376).

Almost surely, 2^55501100556 is an apocalyptic number.

It is an amenable number.

55501100556 is an abundant number, since it is smaller than the sum of its proper divisors (85774428468).

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

55501100556 is a wasteful number, since it uses less digits than its factorization.

55501100556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420462901 (or 420462899 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 33.

Subtracting 55501100556 from its reverse (65500110555), we obtain a palindrome (9999009999).

The spelling of 55501100556 in words is "fifty-five billion, five hundred one million, one hundred thousand, five hundred fifty-six".