11155159 has 4 divisors (see below), whose sum is σ = 11161840. Its totient is φ = 11148480.

The previous prime is 11155139. The next prime is 11155181. The reversal of 11155159 is 95155111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11155159 - 2⁵ = 11155127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11155139) 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, 1639 + ... + 4999.

It is an arithmetic number, because the mean of its divisors is an integer number (2790460).

Almost surely, 2^11155159 is an apocalyptic number.

11155159 is a deficient number, since it is larger than the sum of its proper divisors (6681).

11155159 is an equidigital number, since it uses as much as digits as its factorization.

11155159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6680.

The product of its digits is 1125, while the sum is 28.

The square root of 11155159 is about 3339.9339813835. The cubic root of 11155159 is about 223.4387989785.

The spelling of 11155159 in words is "eleven million, one hundred fifty-five thousand, one hundred fifty-nine".