2253221 has 2 divisors, whose sum is σ = 2253222. Its totient is φ = 2253220.

The previous prime is 2253203. The next prime is 2253247. The reversal of 2253221 is 1223522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2217121 + 36100 = 1489^2 + 190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2253221 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2253221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2253281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1126610 + 1126611.

It is an arithmetic number, because the mean of its divisors is an integer number (1126611).

2^2253221 is an apocalyptic number.

It is an amenable number.

2253221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2253221 is an equidigital number, since it uses as much as digits as its factorization.

2253221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 240, while the sum is 17.

The square root of 2253221 is about 1501.0732826881. The cubic root of 2253221 is about 131.0995688446.

Adding to 2253221 its reverse (1223522), we get a palindrome (3476743).

The spelling of 2253221 in words is "two million, two hundred fifty-three thousand, two hundred twenty-one".