55555500500 has 48 divisors (see below), whose sum is σ = 121410748368. Its totient is φ = 22208000000.

The previous prime is 55555500493. The next prime is 55555500541. The reversal of 55555500500 is 500555555.

It can be written as a sum of positive squares in 8 ways, for example, as 1301910724 + 54253589776 = 36082^2 + 232924^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

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, 765800 + ... + 835200.

It is an arithmetic number, because the mean of its divisors is an integer number (2529390591).

Almost surely, 2^55555500500 is an apocalyptic number.

55555500500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55555500500 is an abundant number, since it is smaller than the sum of its proper divisors (65855247868).

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

55555500500 is a wasteful number, since it uses less digits than its factorization.

55555500500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71021 (or 71009 counting only the distinct ones).

The product of its (nonzero) digits is 78125, while the sum is 35.

It can be divided in two parts, 5555 and 5500500, that added together give a palindrome (5506055).

The spelling of 55555500500 in words is "fifty-five billion, five hundred fifty-five million, five hundred thousand, five hundred".