55171440500 has 48 divisors (see below), whose sum is σ = 131448477888. Its totient is φ = 20062340000.

The previous prime is 55171440413. The next prime is 55171440521. The reversal of 55171440500 is 504417155.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5010086 + ... + 5021085.

It is an arithmetic number, because the mean of its divisors is an integer number (2738509956).

Almost surely, 2^55171440500 is an apocalyptic number.

55171440500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55171440500 is an abundant number, since it is smaller than the sum of its proper divisors (76277037388).

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

55171440500 is a wasteful number, since it uses less digits than its factorization.

55171440500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10031201 (or 10031189 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 32.

Adding to 55171440500 its reverse (504417155), we get a palindrome (55675857655).

The spelling of 55171440500 in words is "fifty-five billion, one hundred seventy-one million, four hundred forty thousand, five hundred".