2232161 has 2 divisors, whose sum is σ = 2232162. Its totient is φ = 2232160.

The previous prime is 2232157. The next prime is 2232179. The reversal of 2232161 is 1612322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2119936 + 112225 = 1456^2 + 335^2 .

It is a cyclic number.

It is not a de Polignac number, because 2232161 - 2² = 2232157 is a prime.

It is a super-4 number, since 4×2232161⁴ (a number of 26 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2232761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1116080 + 1116081.

It is an arithmetic number, because the mean of its divisors is an integer number (1116081).

2^2232161 is an apocalyptic number.

It is an amenable number.

2232161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2232161 is an equidigital number, since it uses as much as digits as its factorization.

2232161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 17.

The square root of 2232161 is about 1494.0418334170. The cubic root of 2232161 is about 130.6898437241.

Adding to 2232161 its reverse (1612322), we get a palindrome (3844483).

The spelling of 2232161 in words is "two million, two hundred thirty-two thousand, one hundred sixty-one".