11559161 has 4 divisors (see below), whose sum is σ = 11698512. Its totient is φ = 11419812.

The previous prime is 11559157. The next prime is 11559169. The reversal of 11559161 is 16195511.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16195511 = 1049 ⋅15439.

It is a cyclic number.

It is not a de Polignac number, because 11559161 - 2² = 11559157 is a prime.

It is a super-2 number, since 2×11559161² = 267228406047842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11559169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69551 + ... + 69716.

It is an arithmetic number, because the mean of its divisors is an integer number (2924628).

Almost surely, 2^11559161 is an apocalyptic number.

It is an amenable number.

11559161 is a deficient number, since it is larger than the sum of its proper divisors (139351).

11559161 is an equidigital number, since it uses as much as digits as its factorization.

11559161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139350.

The product of its digits is 1350, while the sum is 29.

The square root of 11559161 is about 3399.8766154083. The cubic root of 11559161 is about 226.1042735466.

The spelling of 11559161 in words is "eleven million, five hundred fifty-nine thousand, one hundred sixty-one".