111155157 has 12 divisors (see below), whose sum is σ = 160955340. Its totient is φ = 73919808.

The previous prime is 111155153. The next prime is 111155167. The reversal of 111155157 is 751551111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 68657796 + 42497361 = 8286^2 + 6519^2 .

It is not a de Polignac number, because 111155157 - 2² = 111155153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111155157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111155153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11418 + ... + 18779.

It is an arithmetic number, because the mean of its divisors is an integer number (13412945).

Almost surely, 2^111155157 is an apocalyptic number.

It is an amenable number.

111155157 is a deficient number, since it is larger than the sum of its proper divisors (49800183).

111155157 is a wasteful number, since it uses less digits than its factorization.

111155157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30612 (or 30609 counting only the distinct ones).

The product of its digits is 875, while the sum is 27.

The square root of 111155157 is about 10543.0146068380. The cubic root of 111155157 is about 480.8133735412.

The spelling of 111155157 in words is "one hundred eleven million, one hundred fifty-five thousand, one hundred fifty-seven".