551110500500 has 96 divisors (see below), whose sum is σ = 1382485977600. Its totient is φ = 188002425600.

The previous prime is 551110500491. The next prime is 551110500539. The reversal of 551110500500 is 5005011155.

It is a happy number.

It is a super-2 number, since 2×551110500500² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 300872 + ... + 1092128.

It is an arithmetic number, because the mean of its divisors is an integer number (14400895600).

Almost surely, 2^551110500500 is an apocalyptic number.

551110500500 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 551110500500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (691242988800).

551110500500 is an abundant number, since it is smaller than the sum of its proper divisors (831375477100).

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

551110500500 is a wasteful number, since it uses less digits than its factorization.

551110500500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791482 (or 791470 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 23.

Adding to 551110500500 its reverse (5005011155), we get a palindrome (556115511655).

The spelling of 551110500500 in words is "five hundred fifty-one billion, one hundred ten million, five hundred thousand, five hundred".