115361857 has 4 divisors (see below), whose sum is σ = 124235860. Its totient is φ = 106487856.

The previous prime is 115361849. The next prime is 115361879. The reversal of 115361857 is 758163511.

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 27920656 + 87441201 = 5284^2 + 9351^2 .

It is a cyclic number.

It is not a de Polignac number, because 115361857 - 2³ = 115361849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115361887) 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, 4436982 + ... + 4437007.

It is an arithmetic number, because the mean of its divisors is an integer number (31058965).

Almost surely, 2^115361857 is an apocalyptic number.

It is an amenable number.

115361857 is a deficient number, since it is larger than the sum of its proper divisors (8874003).

115361857 is an equidigital number, since it uses as much as digits as its factorization.

115361857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8874002.

The product of its digits is 25200, while the sum is 37.

The square root of 115361857 is about 10740.6637131976. The cubic root of 115361857 is about 486.8039342467.

The spelling of 115361857 in words is "one hundred fifteen million, three hundred sixty-one thousand, eight hundred fifty-seven".