55105900 has 18 divisors (see below), whose sum is σ = 119580020. Its totient is φ = 22042320.

The previous prime is 55105847. The next prime is 55105937. The reversal of 55105900 is 950155.

55105900 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 (25).

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 5 ways as a sum of consecutive naturals, for example, 275430 + ... + 275629.

Almost surely, 2^55105900 is an apocalyptic number.

55105900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55105900 is an abundant number, since it is smaller than the sum of its proper divisors (64474120).

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

55105900 is a wasteful number, since it uses less digits than its factorization.

55105900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551073 (or 551066 counting only the distinct ones).

The product of its (nonzero) digits is 1125, while the sum is 25.

The square root of 55105900 is about 7423.3348301151. The cubic root of 55105900 is about 380.5391699916.

The spelling of 55105900 in words is "fifty-five million, one hundred five thousand, nine hundred".