115646161 has 4 divisors (see below), whose sum is σ = 115834212. Its totient is φ = 115458112.

The previous prime is 115646147. The next prime is 115646177. The reversal of 115646161 is 161646511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 161646511 = 13 ⋅12434347.

It can be written as a sum of positive squares in 2 ways, for example, as 32490000 + 83156161 = 5700^2 + 9119^2 .

It is a cyclic number.

It is not a de Polignac number, because 115646161 - 2⁵ = 115646129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115646191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93100 + ... + 94333.

It is an arithmetic number, because the mean of its divisors is an integer number (28958553).

Almost surely, 2^115646161 is an apocalyptic number.

It is an amenable number.

115646161 is a deficient number, since it is larger than the sum of its proper divisors (188051).

115646161 is an equidigital number, since it uses as much as digits as its factorization.

115646161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188050.

The product of its digits is 4320, while the sum is 31.

The square root of 115646161 is about 10753.8905053009. The cubic root of 115646161 is about 487.2035081642.

The spelling of 115646161 in words is "one hundred fifteen million, six hundred forty-six thousand, one hundred sixty-one".