2184161 has 4 divisors (see below), whose sum is σ = 2496192. Its totient is φ = 1872132.

The previous prime is 2184157. The next prime is 2184179. The reversal of 2184161 is 1614812.

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 2184161 - 2² = 2184157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2184101) 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, 156005 + ... + 156018.

It is an arithmetic number, because the mean of its divisors is an integer number (624048).

2^2184161 is an apocalyptic number.

It is an amenable number.

2184161 is a deficient number, since it is larger than the sum of its proper divisors (312031).

2184161 is an equidigital number, since it uses as much as digits as its factorization.

2184161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312030.

The product of its digits is 384, while the sum is 23.

The square root of 2184161 is about 1477.8907266777. The cubic root of 2184161 is about 129.7462703873.

Adding to 2184161 its reverse (1614812), we get a palindrome (3798973).

The spelling of 2184161 in words is "two million, one hundred eighty-four thousand, one hundred sixty-one".