115897 has 4 divisors (see below), whose sum is σ = 120960. Its totient is φ = 110836.

The previous prime is 115891. The next prime is 115901. The reversal of 115897 is 798511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 798511 = 7 ⋅114073.

It is a cyclic number.

It is not a de Polignac number, because 115897 - 2⁷ = 115769 is a prime.

It is a super-2 number, since 2×115897² = 26864229218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115891) 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, 2497 + ... + 2542.

It is an arithmetic number, because the mean of its divisors is an integer number (30240).

2¹¹⁵⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

115897 is a deficient number, since it is larger than the sum of its proper divisors (5063).

115897 is an equidigital number, since it uses as much as digits as its factorization.

115897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5062.

The product of its digits is 2520, while the sum is 31.

The square root of 115897 is about 340.4364845313. The cubic root of 115897 is about 48.7555505405.

The spelling of 115897 in words is "one hundred fifteen thousand, eight hundred ninety-seven".