115387 has 4 divisors (see below), whose sum is σ = 121480. Its totient is φ = 109296.

The previous prime is 115363. The next prime is 115399. The reversal of 115387 is 783511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783511 = 131 ⋅5981.

It is a cyclic number.

It is not a de Polignac number, because 115387 - 2⁷ = 115259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115327) 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, 3018 + ... + 3055.

It is an arithmetic number, because the mean of its divisors is an integer number (30370).

2¹¹⁵³⁸⁷ is an apocalyptic number.

115387 is a deficient number, since it is larger than the sum of its proper divisors (6093).

115387 is an equidigital number, since it uses as much as digits as its factorization.

115387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6092.

The product of its digits is 840, while the sum is 25.

The square root of 115387 is about 339.6866202840. The cubic root of 115387 is about 48.6839297819.

Adding to 115387 its reverse (783511), we get a palindrome (898898).

The spelling of 115387 in words is "one hundred fifteen thousand, three hundred eighty-seven".