2292181 has 2 divisors, whose sum is σ = 2292182. Its totient is φ = 2292180.

The previous prime is 2292167. The next prime is 2292193. The reversal of 2292181 is 1812922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1716100 + 576081 = 1310^2 + 759^2 .

It is a cyclic number.

It is not a de Polignac number, because 2292181 - 2⁷ = 2292053 is a prime.

It is a super-2 number, since 2×2292181² = 10508187473522, which contains 22 as substring.

2292181 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2292781) 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 as a sum of consecutive naturals, namely, 1146090 + 1146091.

It is an arithmetic number, because the mean of its divisors is an integer number (1146091).

2^2292181 is an apocalyptic number.

It is an amenable number.

2292181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2292181 is an equidigital number, since it uses as much as digits as its factorization.

2292181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 25.

The square root of 2292181 is about 1513.9950462270. The cubic root of 2292181 is about 131.8508607914.

The spelling of 2292181 in words is "two million, two hundred ninety-two thousand, one hundred eighty-one".