1297297 has 2 divisors, whose sum is σ = 1297298. Its totient is φ = 1297296.

The previous prime is 1297279. The next prime is 1297313. The reversal of 1297297 is 7927921.

Together with previous prime (1297279) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 876096 + 421201 = 936^2 + 649^2 .

It is a cyclic number.

It is not a de Polignac number, because 1297297 - 2⁷ = 1297169 is a prime.

It is a Chen prime.

1297297 is a lucky number.

It is equal to p₉₉₈₃₈ and since 1297297 and 99838 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1297217) 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, 648648 + 648649.

It is an arithmetic number, because the mean of its divisors is an integer number (648649).

2^1297297 is an apocalyptic number.

It is an amenable number.

1297297 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297297 is an equidigital number, since it uses as much as digits as its factorization.

1297297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15876, while the sum is 37.

The square root of 1297297 is about 1138.9894643938. The cubic root of 1297297 is about 109.0635938977.

The spelling of 1297297 in words is "one million, two hundred ninety-seven thousand, two hundred ninety-seven".