2243257 has 2 divisors, whose sum is σ = 2243258. Its totient is φ = 2243256.

The previous prime is 2243251. The next prime is 2243261. The reversal of 2243257 is 7523422.

2243257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1806336 + 436921 = 1344^2 + 661^2 .

It is a cyclic number.

It is not a de Polignac number, because 2243257 - 2¹¹ = 2241209 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 2¹⁷ + 4³ + 3⁹ + 2¹⁷ + 5⁹ + 7² .

It is not a weakly prime, because it can be changed into another prime (2243251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1121628 + 1121629.

It is an arithmetic number, because the mean of its divisors is an integer number (1121629).

2^2243257 is an apocalyptic number.

It is an amenable number.

2243257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2243257 is an equidigital number, since it uses as much as digits as its factorization.

2243257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 25.

The square root of 2243257 is about 1497.7506468034. The cubic root of 2243257 is about 130.9060375474.

Adding to 2243257 its reverse (7523422), we get a palindrome (9766679).

It can be divided in two parts, 2243 and 257, that added together give a square (2500 = 50²).

The spelling of 2243257 in words is "two million, two hundred forty-three thousand, two hundred fifty-seven".