55100555100 has 72 divisors (see below), whose sum is σ = 177138089520. Its totient is φ = 14693480640.

The previous prime is 55100555087. The next prime is 55100555119. The reversal of 55100555100 is 155500155.

55100555100 is a `hidden beast` number, since 5 + 5 + 1 + 0 + 0 + 555 + 100 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10201107 + ... + 10206506.

Almost surely, 2^55100555100 is an apocalyptic number.

55100555100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55100555100 is an abundant number, since it is smaller than the sum of its proper divisors (122037534420).

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

55100555100 is a wasteful number, since it uses less digits than its factorization.

55100555100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20407636 (or 20407623 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 27.

Subtracting from 55100555100 its reverse (155500155), we obtain a palindrome (54945054945).

It can be divided in two parts, 5510055 and 5100, that added together give a palindrome (5515155).

The spelling of 55100555100 in words is "fifty-five billion, one hundred million, five hundred fifty-five thousand, one hundred".