1257297 has 16 divisors (see below), whose sum is σ = 1765632. Its totient is φ = 794880.

The previous prime is 1257293. The next prime is 1257307. The reversal of 1257297 is 7927521.

It is not a de Polignac number, because 1257297 - 2² = 1257293 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1257293) 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 in 15 ways as a sum of consecutive naturals, for example, 5097 + ... + 5337.

It is an arithmetic number, because the mean of its divisors is an integer number (110352).

2^1257297 is an apocalyptic number.

It is an amenable number.

1257297 is a deficient number, since it is larger than the sum of its proper divisors (508335).

1257297 is a wasteful number, since it uses less digits than its factorization.

1257297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328.

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

The square root of 1257297 is about 1121.2925577208. The cubic root of 1257297 is about 107.9309400744.

The spelling of 1257297 in words is "one million, two hundred fifty-seven thousand, two hundred ninety-seven".