1297257 has 32 divisors (see below), whose sum is σ = 2042880. Its totient is φ = 725760.

The previous prime is 1297249. The next prime is 1297271. The reversal of 1297257 is 7527921.

It is not a de Polignac number, because 1297257 - 2³ = 1297249 is a prime.

It is a d-powerful number, because it can be written as 1 + 2⁴ + 9³ + 7⁵ + 2¹⁶ + 5⁸ + 7⁷ .

It is not an unprimeable number, because it can be changed into a prime (1297217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35043 + ... + 35079.

It is an arithmetic number, because the mean of its divisors is an integer number (63840).

2^1297257 is an apocalyptic number.

It is an amenable number.

1297257 is a deficient number, since it is larger than the sum of its proper divisors (745623).

1297257 is a wasteful number, since it uses less digits than its factorization.

1297257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113.

The product of its digits is 8820, while the sum is 33.

The square root of 1297257 is about 1138.9719048335. The cubic root of 1297257 is about 109.0624729545.

The spelling of 1297257 in words is "one million, two hundred ninety-seven thousand, two hundred fifty-seven".