115855 has 16 divisors (see below), whose sum is σ = 155520. Its totient is φ = 82432.

The previous prime is 115853. The next prime is 115859. The reversal of 115855 is 558511.

It is a cyclic number.

It is not a de Polignac number, because 115855 - 2¹ = 115853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2442 + ... + 2488.

It is an arithmetic number, because the mean of its divisors is an integer number (9720).

2¹¹⁵⁸⁵⁵ is an apocalyptic number.

115855 is a deficient number, since it is larger than the sum of its proper divisors (39665).

115855 is a wasteful number, since it uses less digits than its factorization.

115855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98.

The product of its digits is 1000, while the sum is 25.

The square root of 115855 is about 340.3747934263. The cubic root of 115855 is about 48.7496603088.

The spelling of 115855 in words is "one hundred fifteen thousand, eight hundred fifty-five".