11159161 has 4 divisors (see below), whose sum is σ = 12017572. Its totient is φ = 10300752.

The previous prime is 11159153. The next prime is 11159167. The reversal of 11159161 is 16195111.

11159161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16195111 = 109 ⋅148579.

It can be written as a sum of positive squares in 2 ways, for example, as 4687225 + 6471936 = 2165^2 + 2544^2 .

It is a cyclic number.

It is not a de Polignac number, because 11159161 - 2³ = 11159153 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (11159167) 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, 429186 + ... + 429211.

It is an arithmetic number, because the mean of its divisors is an integer number (3004393).

Almost surely, 2^11159161 is an apocalyptic number.

It is an amenable number.

11159161 is a deficient number, since it is larger than the sum of its proper divisors (858411).

11159161 is an equidigital number, since it uses as much as digits as its factorization.

11159161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858410.

The product of its digits is 270, while the sum is 25.

The square root of 11159161 is about 3340.5330412975. The cubic root of 11159161 is about 223.4655159191.

The spelling of 11159161 in words is "eleven million, one hundred fifty-nine thousand, one hundred sixty-one".