111111055 has 32 divisors (see below), whose sum is σ = 151538688. Its totient is φ = 77500800.

The previous prime is 111111041. The next prime is 111111061. The reversal of 111111055 is 550111111.

It is not a de Polignac number, because 111111055 - 2⁵ = 111111023 is a prime.

It is a Duffinian number.

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, 136600 + ... + 137410.

It is an arithmetic number, because the mean of its divisors is an integer number (4735584).

Almost surely, 2^111111055 is an apocalyptic number.

111111055 is a deficient number, since it is larger than the sum of its proper divisors (40427633).

111111055 is a wasteful number, since it uses less digits than its factorization.

111111055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927.

The product of its (nonzero) digits is 25, while the sum is 16.

The square root of 111111055 is about 10540.9228723106. The cubic root of 111111055 is about 480.7497758429.

Adding to 111111055 its reverse (550111111), we get a palindrome (661222166).

The spelling of 111111055 in words is "one hundred eleven million, one hundred eleven thousand, fifty-five".