115144015 has 16 divisors (see below), whose sum is σ = 158888448. Its totient is φ = 78467616.

The previous prime is 115143997. The next prime is 115144033. The reversal of 115144015 is 510441511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (115143997) and next prime (115144033).

It is a cyclic number.

It is not a de Polignac number, because 115144015 - 2⁵ = 115143983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4387 + ... + 15796.

It is an arithmetic number, because the mean of its divisors is an integer number (9930528).

Almost surely, 2^115144015 is an apocalyptic number.

115144015 is a deficient number, since it is larger than the sum of its proper divisors (43744433).

115144015 is a wasteful number, since it uses less digits than its factorization.

115144015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20358.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 115144015 is about 10730.5179278542. The cubic root of 115144015 is about 486.4973246333.

Adding to 115144015 its reverse (510441511), we get a palindrome (625585526).

The spelling of 115144015 in words is "one hundred fifteen million, one hundred forty-four thousand, fifteen".