55188533500 has 24 divisors (see below), whose sum is σ = 120531758256. Its totient is φ = 22075413200.

The previous prime is 55188533473. The next prime is 55188533501. The reversal of 55188533500 is 533588155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55188533501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55188034 + ... + 55189033.

It is an arithmetic number, because the mean of its divisors is an integer number (5022156594).

Almost surely, 2^55188533500 is an apocalyptic number.

55188533500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55188533500 is an abundant number, since it is smaller than the sum of its proper divisors (65343224756).

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

55188533500 is a wasteful number, since it uses less digits than its factorization.

55188533500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110377086 (or 110377074 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 43.

The spelling of 55188533500 in words is "fifty-five billion, one hundred eighty-eight million, five hundred thirty-three thousand, five hundred".