115605487 has 4 divisors (see below), whose sum is σ = 115710840. Its totient is φ = 115500136.

The previous prime is 115605467. The next prime is 115605569. The reversal of 115605487 is 784506511.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115605487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115605407) 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, 51013 + ... + 53230.

It is an arithmetic number, because the mean of its divisors is an integer number (28927710).

Almost surely, 2^115605487 is an apocalyptic number.

115605487 is a deficient number, since it is larger than the sum of its proper divisors (105353).

115605487 is a wasteful number, since it uses less digits than its factorization.

115605487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105352.

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 115605487 is about 10751.9992094494. Note that the first 3 decimals coincide. The cubic root of 115605487 is about 487.1463832267.

The spelling of 115605487 in words is "one hundred fifteen million, six hundred five thousand, four hundred eighty-seven".