1316257 has 2 divisors, whose sum is σ = 1316258. Its totient is φ = 1316256.

The previous prime is 1316251. The next prime is 1316261. The reversal of 1316257 is 7526131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1274641 + 41616 = 1129^2 + 204^2 .

It is a cyclic number.

It is not a de Polignac number, because 1316257 - 2¹⁹ = 791969 is a prime.

It is not a weakly prime, because it can be changed into another prime (1316251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658128 + 658129.

It is an arithmetic number, because the mean of its divisors is an integer number (658129).

2^1316257 is an apocalyptic number.

It is an amenable number.

1316257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316257 is an equidigital number, since it uses as much as digits as its factorization.

1316257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 25.

The square root of 1316257 is about 1147.2824412498. The cubic root of 1316257 is about 109.5923478860.

The spelling of 1316257 in words is "one million, three hundred sixteen thousand, two hundred fifty-seven".