115880161 has 4 divisors (see below), whose sum is σ = 115924500. Its totient is φ = 115835824.

The previous prime is 115880153. The next prime is 115880179. The reversal of 115880161 is 161088511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31809600 + 84070561 = 5640^2 + 9169^2 .

It is a cyclic number.

It is not a de Polignac number, because 115880161 - 2³ = 115880153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115880561) 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, 17986 + ... + 23563.

It is an arithmetic number, because the mean of its divisors is an integer number (28981125).

Almost surely, 2^115880161 is an apocalyptic number.

It is an amenable number.

115880161 is a deficient number, since it is larger than the sum of its proper divisors (44339).

115880161 is an equidigital number, since it uses as much as digits as its factorization.

115880161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44338.

The product of its (nonzero) digits is 1920, while the sum is 31.

The square root of 115880161 is about 10764.7647907421. The cubic root of 115880161 is about 487.5318914924.

The spelling of 115880161 in words is "one hundred fifteen million, eight hundred eighty thousand, one hundred sixty-one".