115197289 has 3 divisors (see below), whose sum is σ = 115208023. Its totient is φ = 115186556.

The previous prime is 115197281. The next prime is 115197307. The reversal of 115197289 is 982791511.

The square root of 115197289 is 10733.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 9272025 + 105925264 = 3045^2 + 10292^2 .

It is not a de Polignac number, because 115197289 - 2³ = 115197281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115197281) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5367 + ... + 16099.

Almost surely, 2^115197289 is an apocalyptic number.

115197289 is the 10733-rd square number.

115197289 is the 5367-th centered octagonal number.

It is an amenable number.

115197289 is a deficient number, since it is larger than the sum of its proper divisors (10734).

115197289 is an frugal number, since it uses more digits than its factorization.

115197289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21466 (or 10733 counting only the distinct ones).

The product of its digits is 45360, while the sum is 43.

The cubic root of 115197289 is about 486.5723427526.

The spelling of 115197289 in words is "one hundred fifteen million, one hundred ninety-seven thousand, two hundred eighty-nine".