1297357 has 2 divisors, whose sum is σ = 1297358. Its totient is φ = 1297356.

The previous prime is 1297349. The next prime is 1297367. The reversal of 1297357 is 7537921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1297321 + 36 = 1139^2 + 6^2 .

It is a cyclic number.

It is not a de Polignac number, because 1297357 - 2³ = 1297349 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1297337) 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, 648678 + 648679.

It is an arithmetic number, because the mean of its divisors is an integer number (648679).

2^1297357 is an apocalyptic number.

It is an amenable number.

1297357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297357 is an equidigital number, since it uses as much as digits as its factorization.

1297357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13230, while the sum is 34.

The square root of 1297357 is about 1139.0158032266. The cubic root of 1297357 is about 109.0652752692.

The spelling of 1297357 in words is "one million, two hundred ninety-seven thousand, three hundred fifty-seven".