55091869100 has 18 divisors (see below), whose sum is σ = 119549356164. Its totient is φ = 22036747600.

The previous prime is 55091869099. The next prime is 55091869109. The reversal of 55091869100 is 196819055.

It is a super-2 number, since 2×55091869100² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55091869109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 275459246 + ... + 275459445.

It is an arithmetic number, because the mean of its divisors is an integer number (6641630898).

Almost surely, 2^55091869100 is an apocalyptic number.

55091869100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55091869100 is an abundant number, since it is smaller than the sum of its proper divisors (64457487064).

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

55091869100 is a wasteful number, since it uses less digits than its factorization.

55091869100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550918705 (or 550918698 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 44.

The spelling of 55091869100 in words is "fifty-five billion, ninety-one million, eight hundred sixty-nine thousand, one hundred".