2243161 has 2 divisors, whose sum is σ = 2243162. Its totient is φ = 2243160.

The previous prime is 2243123. The next prime is 2243177. The reversal of 2243161 is 1613422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1795600 + 447561 = 1340^2 + 669^2 .

It is a cyclic number.

It is not a de Polignac number, because 2243161 - 2²¹ = 146009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2243261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1121580 + 1121581.

It is an arithmetic number, because the mean of its divisors is an integer number (1121581).

2^2243161 is an apocalyptic number.

It is an amenable number.

2243161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2243161 is an equidigital number, since it uses as much as digits as its factorization.

2243161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 19.

The square root of 2243161 is about 1497.7185984022. The cubic root of 2243161 is about 130.9041701497.

Adding to 2243161 its reverse (1613422), we get a palindrome (3856583).

The spelling of 2243161 in words is "two million, two hundred forty-three thousand, one hundred sixty-one".