115500 has 96 divisors (see below), whose sum is σ = 419328. Its totient is φ = 24000.

The previous prime is 115499. The next prime is 115513. The reversal of 115500 is 5511.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a zygodrome in base 10.

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, 10495 + ... + 10505.

It is an arithmetic number, because the mean of its divisors is an integer number (4368).

2¹¹⁵⁵⁰⁰ is an apocalyptic number.

115500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209664).

115500 is an abundant number, since it is smaller than the sum of its proper divisors (303828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115500 is a wasteful number, since it uses less digits than its factorization.

115500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 12.

The square root of 115500 is about 339.8529093593. The cubic root of 115500 is about 48.6998168669.

The spelling of 115500 in words is "one hundred fifteen thousand, five hundred".