115887 has 4 divisors (see below), whose sum is σ = 154520. Its totient is φ = 77256.

The previous prime is 115883. The next prime is 115891. The reversal of 115887 is 788511.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (115883) and next prime (115891).

It is not a de Polignac number, because 115887 - 2² = 115883 is a prime.

It is a D-number.

It is a Duffinian number.

115887 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 115887.

It is not an unprimeable number, because it can be changed into a prime (115883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19312 + ... + 19317.

It is an arithmetic number, because the mean of its divisors is an integer number (38630).

2¹¹⁵⁸⁸⁷ is an apocalyptic number.

115887 is a deficient number, since it is larger than the sum of its proper divisors (38633).

115887 is an equidigital number, since it uses as much as digits as its factorization.

115887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38632.

The product of its digits is 2240, while the sum is 30.

The square root of 115887 is about 340.4217971870. The cubic root of 115887 is about 48.7541482335.

The spelling of 115887 in words is "one hundred fifteen thousand, eight hundred eighty-seven".