115171897 has 2 divisors, whose sum is σ = 115171898. Its totient is φ = 115171896.

The previous prime is 115171877. The next prime is 115171909. The reversal of 115171897 is 798171511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79995136 + 35176761 = 8944^2 + 5931^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115171897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115171807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57585948 + 57585949.

It is an arithmetic number, because the mean of its divisors is an integer number (57585949).

Almost surely, 2^115171897 is an apocalyptic number.

It is an amenable number.

115171897 is a deficient number, since it is larger than the sum of its proper divisors (1).

115171897 is an equidigital number, since it uses as much as digits as its factorization.

115171897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 40.

The square root of 115171897 is about 10731.8170409302. The cubic root of 115171897 is about 486.5365897329.

The spelling of 115171897 in words is "one hundred fifteen million, one hundred seventy-one thousand, eight hundred ninety-seven".