111995 has 8 divisors (see below), whose sum is σ = 144816. Its totient is φ = 82656.

The previous prime is 111977. The next prime is 111997. The reversal of 111995 is 599111.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111995 is a prime.

It is a Duffinian number.

It is a plaindrome in base 6.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (111997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 797 + ... + 926.

It is an arithmetic number, because the mean of its divisors is an integer number (18102).

2¹¹¹⁹⁹⁵ is an apocalyptic number.

111995 is a deficient number, since it is larger than the sum of its proper divisors (32821).

111995 is a wasteful number, since it uses less digits than its factorization.

111995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1741.

The product of its digits is 405, while the sum is 26.

The square root of 111995 is about 334.6565403514. The cubic root of 111995 is about 48.2021279686.

It can be divided in two parts, 11 and 1995, that multiplied together give a triangular number (21945 = T₂₀₉).

The spelling of 111995 in words is "one hundred eleven thousand, nine hundred ninety-five".