115398161 has 2 divisors, whose sum is σ = 115398162. Its totient is φ = 115398160.

The previous prime is 115398133. The next prime is 115398203. The reversal of 115398161 is 161893511.

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., 59985025 + 55413136 = 7745^2 + 7444^2 .

It is a cyclic number.

It is not a de Polignac number, because 115398161 - 2¹⁸ = 115136017 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115398131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57699080 + 57699081.

It is an arithmetic number, because the mean of its divisors is an integer number (57699081).

Almost surely, 2^115398161 is an apocalyptic number.

It is an amenable number.

115398161 is a deficient number, since it is larger than the sum of its proper divisors (1).

115398161 is an equidigital number, since it uses as much as digits as its factorization.

115398161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 35.

The square root of 115398161 is about 10742.3536061703. The cubic root of 115398161 is about 486.8549940943.

The spelling of 115398161 in words is "one hundred fifteen million, three hundred ninety-eight thousand, one hundred sixty-one".