115145 has 4 divisors (see below), whose sum is σ = 138180. Its totient is φ = 92112.

The previous prime is 115133. The next prime is 115151. The reversal of 115145 is 541511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76729 + 38416 = 277^2 + 196^2 .

It is a cyclic number.

It is not a de Polignac number, because 115145 - 2⁸ = 114889 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11510 + ... + 11519.

It is an arithmetic number, because the mean of its divisors is an integer number (34545).

2¹¹⁵¹⁴⁵ is an apocalyptic number.

It is an amenable number.

115145 is a deficient number, since it is larger than the sum of its proper divisors (23035).

115145 is an equidigital number, since it uses as much as digits as its factorization.

115145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23034.

The product of its digits is 100, while the sum is 17.

The square root of 115145 is about 339.3302226446. The cubic root of 115145 is about 48.6498711877.

Adding to 115145 its reverse (541511), we get a palindrome (656656).

The spelling of 115145 in words is "one hundred fifteen thousand, one hundred forty-five".