2161159 has 32 divisors (see below), whose sum is σ = 3096576. Its totient is φ = 1451520.

The previous prime is 2161157. The next prime is 2161163. The reversal of 2161159 is 9511612.

It is not a de Polignac number, because 2161159 - 2¹ = 2161157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16954 + ... + 17080.

It is an arithmetic number, because the mean of its divisors is an integer number (96768).

2^2161159 is an apocalyptic number.

2161159 is a deficient number, since it is larger than the sum of its proper divisors (935417).

2161159 is a wasteful number, since it uses less digits than its factorization.

2161159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175.

The product of its digits is 540, while the sum is 25.

The square root of 2161159 is about 1470.0880925985. The cubic root of 2161159 is about 129.2891975439.

It can be divided in two parts, 2 and 161159, that added together give a palindrome (161161).

The spelling of 2161159 in words is "two million, one hundred sixty-one thousand, one hundred fifty-nine".