115660511 has 4 divisors (see below), whose sum is σ = 116179392. Its totient is φ = 115141632.

The previous prime is 115660507. The next prime is 115660513. The reversal of 115660511 is 115066511.

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

It is a cyclic number.

It is not a de Polignac number, because 115660511 - 2² = 115660507 is a prime.

It is a super-2 number, since 2×115660511² = 26754707609562242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115660513) 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, 259106 + ... + 259551.

It is an arithmetic number, because the mean of its divisors is an integer number (29044848).

Almost surely, 2^115660511 is an apocalyptic number.

115660511 is a deficient number, since it is larger than the sum of its proper divisors (518881).

115660511 is an equidigital number, since it uses as much as digits as its factorization.

115660511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518880.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 115660511 is about 10754.5576850003. The cubic root of 115660511 is about 487.2236589447.

The spelling of 115660511 in words is "one hundred fifteen million, six hundred sixty thousand, five hundred eleven".