551111055 has 64 divisors (see below), whose sum is σ = 1017446400. Its totient is φ = 251925120.

The previous prime is 551111023. The next prime is 551111063. The reversal of 551111055 is 550111155.

It is not a de Polignac number, because 551111055 - 2⁵ = 551111023 is a prime.

It is a congruent number.

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, 1150306 + ... + 1150784.

It is an arithmetic number, because the mean of its divisors is an integer number (15897600).

Almost surely, 2^551111055 is an apocalyptic number.

551111055 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

551111055 is a deficient number, since it is larger than the sum of its proper divisors (466335345).

551111055 is a wasteful number, since it uses less digits than its factorization.

551111055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884.

The product of its (nonzero) digits is 625, while the sum is 24.

The square root of 551111055 is about 23475.7546204590. The cubic root of 551111055 is about 819.8726031511.

The spelling of 551111055 in words is "five hundred fifty-one million, one hundred eleven thousand, fifty-five".