2183161 has 4 divisors (see below), whose sum is σ = 2203300. Its totient is φ = 2163024.

The previous prime is 2183141. The next prime is 2183171. The reversal of 2183161 is 1613812.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1040400 + 1142761 = 1020^2 + 1069^2 .

It is a cyclic number.

It is not a de Polignac number, because 2183161 - 2¹⁹ = 1658873 is a prime.

It is an Ulam number.

It is a Duffinian number.

2183161 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2183131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9906 + ... + 10123.

It is an arithmetic number, because the mean of its divisors is an integer number (550825).

2^2183161 is an apocalyptic number.

It is an amenable number.

2183161 is a deficient number, since it is larger than the sum of its proper divisors (20139).

2183161 is a wasteful number, since it uses less digits than its factorization.

2183161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20138.

The product of its digits is 288, while the sum is 22.

The square root of 2183161 is about 1477.5523679383. The cubic root of 2183161 is about 129.7264662800.

Adding to 2183161 its reverse (1613812), we get a palindrome (3796973).

The spelling of 2183161 in words is "two million, one hundred eighty-three thousand, one hundred sixty-one".