115995 has 32 divisors (see below), whose sum is σ = 218880. Its totient is φ = 51840.

The previous prime is 115987. The next prime is 116009. The reversal of 115995 is 599511.

It is not a de Polignac number, because 115995 - 2³ = 115987 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

Its product of digits (2025) is a multiple of the sum of its prime divisors (75).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3117 + ... + 3153.

It is an arithmetic number, because the mean of its divisors is an integer number (6840).

2¹¹⁵⁹⁹⁵ is an apocalyptic number.

115995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

115995 is a deficient number, since it is larger than the sum of its proper divisors (102885).

115995 is a wasteful number, since it uses less digits than its factorization.

115995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75.

The product of its digits is 2025, while the sum is 30.

The square root of 115995 is about 340.5803869867. The cubic root of 115995 is about 48.7692888824.

It can be divided in two parts, 11 and 5995, that added together give a palindrome (6006).

The spelling of 115995 in words is "one hundred fifteen thousand, nine hundred ninety-five".