111555045 has 24 divisors (see below), whose sum is σ = 220985856. Its totient is φ = 50996448.

The previous prime is 111555043. The next prime is 111555047. The reversal of 111555045 is 540555111.

111555045 is a `hidden beast` number, since 1 + 1 + 155 + 504 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (111555043) and next prime (111555047).

It is not a de Polignac number, because 111555045 - 2¹ = 111555043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111555043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176757 + ... + 177386.

It is an arithmetic number, because the mean of its divisors is an integer number (9207744).

Almost surely, 2^111555045 is an apocalyptic number.

111555045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111555045 is a deficient number, since it is larger than the sum of its proper divisors (109430811).

111555045 is a wasteful number, since it uses less digits than its factorization.

111555045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354161 (or 354158 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 27.

The square root of 111555045 is about 10561.9621756566. The cubic root of 111555045 is about 481.3892694134.

The spelling of 111555045 in words is "one hundred eleven million, five hundred fifty-five thousand, forty-five".