111872157 has 8 divisors (see below), whose sum is σ = 149244576. Its totient is φ = 74540592.

The previous prime is 111872113. The next prime is 111872203. The reversal of 111872157 is 751278111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111872157 - 2¹² = 111868061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111872857) 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 7 ways as a sum of consecutive naturals, for example, 3118 + ... + 15279.

It is an arithmetic number, because the mean of its divisors is an integer number (18655572).

Almost surely, 2^111872157 is an apocalyptic number.

It is an amenable number.

111872157 is a deficient number, since it is larger than the sum of its proper divisors (37372419).

111872157 is a wasteful number, since it uses less digits than its factorization.

111872157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20427.

The product of its digits is 3920, while the sum is 33.

The square root of 111872157 is about 10576.9635056570. The cubic root of 111872157 is about 481.8449783548.

The spelling of 111872157 in words is "one hundred eleven million, eight hundred seventy-two thousand, one hundred fifty-seven".