55091910500 has 48 divisors (see below), whose sum is σ = 131258994048. Its totient is φ = 20033420000.

The previous prime is 55091910481. The next prime is 55091910509. The reversal of 55091910500 is 501919055.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (55091910509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5002856 + ... + 5013855.

It is an arithmetic number, because the mean of its divisors is an integer number (2734562376).

Almost surely, 2^55091910500 is an apocalyptic number.

55091910500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55091910500 is an abundant number, since it is smaller than the sum of its proper divisors (76167083548).

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

55091910500 is a wasteful number, since it uses less digits than its factorization.

55091910500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10016741 (or 10016729 counting only the distinct ones).

The product of its (nonzero) digits is 10125, while the sum is 35.

The spelling of 55091910500 in words is "fifty-five billion, ninety-one million, nine hundred ten thousand, five hundred".