115173881 has 2 divisors, whose sum is σ = 115173882. Its totient is φ = 115173880.

The previous prime is 115173847. The next prime is 115173893. The reversal of 115173881 is 188371511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74978281 + 40195600 = 8659^2 + 6340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115173881 is a prime.

It is a super-2 number, since 2×115173881² = 26530045729204322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (115173481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57586940 + 57586941.

It is an arithmetic number, because the mean of its divisors is an integer number (57586941).

Almost surely, 2^115173881 is an apocalyptic number.

It is an amenable number.

115173881 is a deficient number, since it is larger than the sum of its proper divisors (1).

115173881 is an equidigital number, since it uses as much as digits as its factorization.

115173881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 35.

The square root of 115173881 is about 10731.9094759507. The cubic root of 115173881 is about 486.5393834789.

The spelling of 115173881 in words is "one hundred fifteen million, one hundred seventy-three thousand, eight hundred eighty-one".