55505050500 has 192 divisors, whose sum is σ = 171359225856. Its totient is φ = 13936320000.

The previous prime is 55505050477. The next prime is 55505050529. The reversal of 55505050500 is 505050555.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1704370 + ... + 1736630.

It is an arithmetic number, because the mean of its divisors is an integer number (892495968).

Almost surely, 2^55505050500 is an apocalyptic number.

55505050500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55505050500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85679612928).

55505050500 is an abundant number, since it is smaller than the sum of its proper divisors (115854175356).

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

55505050500 is a wasteful number, since it uses less digits than its factorization.

55505050500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32351 (or 32339 counting only the distinct ones).

The product of its (nonzero) digits is 15625, while the sum is 30.

Subtracting from 55505050500 its reverse (505050555), we obtain a palindrome (54999999945).

It can be divided in two parts, 555050 and 50500, that added together give a triangular number (605550 = T₁₁₀₀).

The spelling of 55505050500 in words is "fifty-five billion, five hundred five million, fifty thousand, five hundred".