115137249 has 4 divisors (see below), whose sum is σ = 153516336. Its totient is φ = 76758164.

The previous prime is 115137247. The next prime is 115137259. The reversal of 115137249 is 942731511.

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.

It is a cyclic number.

It is not a de Polignac number, because 115137249 - 2¹ = 115137247 is a prime.

It is a super-2 number, since 2×115137249² = 26513172214576002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (115137247) 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, 19189539 + ... + 19189544.

It is an arithmetic number, because the mean of its divisors is an integer number (38379084).

Almost surely, 2^115137249 is an apocalyptic number.

It is an amenable number.

115137249 is a deficient number, since it is larger than the sum of its proper divisors (38379087).

115137249 is an equidigital number, since it uses as much as digits as its factorization.

115137249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38379086.

The product of its digits is 7560, while the sum is 33.

The square root of 115137249 is about 10730.2026541906. The cubic root of 115137249 is about 486.4877953918.

The spelling of 115137249 in words is "one hundred fifteen million, one hundred thirty-seven thousand, two hundred forty-nine".