115577161 has 4 divisors (see below), whose sum is σ = 132088192. Its totient is φ = 99066132.

The previous prime is 115577141. The next prime is 115577167. The reversal of 115577161 is 161775511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 115577161 - 2⁵ = 115577129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115577167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8255505 + ... + 8255518.

It is an arithmetic number, because the mean of its divisors is an integer number (33022048).

Almost surely, 2^115577161 is an apocalyptic number.

It is an amenable number.

115577161 is a deficient number, since it is larger than the sum of its proper divisors (16511031).

115577161 is an equidigital number, since it uses as much as digits as its factorization.

115577161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16511030.

The product of its digits is 7350, while the sum is 34.

The square root of 115577161 is about 10750.6818853503. The cubic root of 115577161 is about 487.1065926251.

The spelling of 115577161 in words is "one hundred fifteen million, five hundred seventy-seven thousand, one hundred sixty-one".