1322257 has 2 divisors, whose sum is σ = 1322258. Its totient is φ = 1322256.

The previous prime is 1322227. The next prime is 1322261. The reversal of 1322257 is 7522231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 913936 + 408321 = 956^2 + 639^2 .

It is an emirp because it is prime and its reverse (7522231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1322257 - 2⁷ = 1322129 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1322227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661128 + 661129.

It is an arithmetic number, because the mean of its divisors is an integer number (661129).

2^1322257 is an apocalyptic number.

It is an amenable number.

1322257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322257 is an equidigital number, since it uses as much as digits as its factorization.

1322257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 22.

The square root of 1322257 is about 1149.8943429724. The cubic root of 1322257 is about 109.7586167030.

Adding to 1322257 its reverse (7522231), we get a palindrome (8844488).

The spelling of 1322257 in words is "one million, three hundred twenty-two thousand, two hundred fifty-seven".