111158 has 4 divisors (see below), whose sum is σ = 166740. Its totient is φ = 55578.

The previous prime is 111149. The next prime is 111187. The reversal of 111158 is 851111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 851111 = 37 ⋅23003.

It is a super-2 number, since 2×111158² = 24712201928, which contains 22 as substring.

It is a Curzon number.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

111158 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27788 + ... + 27791.

It is an arithmetic number, because the mean of its divisors is an integer number (41685).

2¹¹¹¹⁵⁸ is an apocalyptic number.

111158 is a deficient number, since it is larger than the sum of its proper divisors (55582).

111158 is an equidigital number, since it uses as much as digits as its factorization.

111158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55581.

The product of its digits is 40, while the sum is 17.

The square root of 111158 is about 333.4036592481. The cubic root of 111158 is about 48.0817472739.

Adding to 111158 its reverse (851111), we get a palindrome (962269).

The spelling of 111158 in words is "one hundred eleven thousand, one hundred fifty-eight".