115111513 has 8 divisors (see below), whose sum is σ = 125837856. Its totient is φ = 104428800.

The previous prime is 115111511. The next prime is 115111517. The reversal of 115111513 is 315111511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115111513 - 2¹ = 115111511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115111511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5256 + ... + 16057.

It is an arithmetic number, because the mean of its divisors is an integer number (15729732).

Almost surely, 2^115111513 is an apocalyptic number.

It is an amenable number.

115111513 is a deficient number, since it is larger than the sum of its proper divisors (10726343).

115111513 is a wasteful number, since it uses less digits than its factorization.

115111513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21815.

The product of its digits is 75, while the sum is 19.

The square root of 115111513 is about 10729.0033553914. The cubic root of 115111513 is about 486.4515453714.

It can be divided in two parts, 115 and 111513, that added together give a triangular number (111628 = T₄₇₂).

The spelling of 115111513 in words is "one hundred fifteen million, one hundred eleven thousand, five hundred thirteen".