115857355 has 4 divisors (see below), whose sum is σ = 139028832. Its totient is φ = 92685880.

The previous prime is 115857341. The next prime is 115857359. The reversal of 115857355 is 553758511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 553758511 = 23 ⋅24076457.

It is a de Polignac number, because none of the positive numbers 2^k-115857355 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115857359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11585731 + ... + 11585740.

It is an arithmetic number, because the mean of its divisors is an integer number (34757208).

Almost surely, 2^115857355 is an apocalyptic number.

115857355 is a deficient number, since it is larger than the sum of its proper divisors (23171477).

115857355 is an equidigital number, since it uses as much as digits as its factorization.

115857355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23171476.

The product of its digits is 105000, while the sum is 40.

The square root of 115857355 is about 10763.7054493330. The cubic root of 115857355 is about 487.4999062020.

The spelling of 115857355 in words is "one hundred fifteen million, eight hundred fifty-seven thousand, three hundred fifty-five".