551056111100 has 72 divisors (see below), whose sum is σ = 1317416211216. Its totient is φ = 198400000000.

The previous prime is 551056111097. The next prime is 551056111121. The reversal of 551056111100 is 1111650155.

It is a self number, because there is not a number n which added to its sum of digits gives 551056111100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2368901 + ... + 2591100.

It is an arithmetic number, because the mean of its divisors is an integer number (18297447378).

Almost surely, 2^551056111100 is an apocalyptic number.

551056111100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

551056111100 is an abundant number, since it is smaller than the sum of its proper divisors (766360100116).

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

551056111100 is a wasteful number, since it uses less digits than its factorization.

551056111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4960127 (or 4960120 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 26.

Adding to 551056111100 its reverse (1111650155), we get a palindrome (552167761255).

The spelling of 551056111100 in words is "five hundred fifty-one billion, fifty-six million, one hundred eleven thousand, one hundred".