115388857 has 2 divisors, whose sum is σ = 115388858. Its totient is φ = 115388856.

The previous prime is 115388849. The next prime is 115388869. The reversal of 115388857 is 758883511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99420841 + 15968016 = 9971^2 + 3996^2 .

It is an emirp because it is prime and its reverse (758883511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115388857 - 2³ = 115388849 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115388887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57694428 + 57694429.

It is an arithmetic number, because the mean of its divisors is an integer number (57694429).

Almost surely, 2^115388857 is an apocalyptic number.

It is an amenable number.

115388857 is a deficient number, since it is larger than the sum of its proper divisors (1).

115388857 is an equidigital number, since it uses as much as digits as its factorization.

115388857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 268800, while the sum is 46.

The square root of 115388857 is about 10741.9205452284. The cubic root of 115388857 is about 486.8419094819.

The spelling of 115388857 in words is "one hundred fifteen million, three hundred eighty-eight thousand, eight hundred fifty-seven".