115402857 has 4 divisors (see below), whose sum is σ = 153870480. Its totient is φ = 76935236.

The previous prime is 115402811. The next prime is 115402871. The reversal of 115402857 is 758204511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 115402857 - 2²² = 111208553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115402897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19233807 + ... + 19233812.

It is an arithmetic number, because the mean of its divisors is an integer number (38467620).

Almost surely, 2^115402857 is an apocalyptic number.

It is an amenable number.

115402857 is a deficient number, since it is larger than the sum of its proper divisors (38467623).

115402857 is an equidigital number, since it uses as much as digits as its factorization.

115402857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38467622.

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 115402857 is about 10742.5721780214. The cubic root of 115402857 is about 486.8615980124.

The spelling of 115402857 in words is "one hundred fifteen million, four hundred two thousand, eight hundred fifty-seven".