1097257 has 10 divisors (see below), whose sum is σ = 1282858. Its totient is φ = 938448.

The previous prime is 1097237. The next prime is 1097267. The reversal of 1097257 is 7527901.

It can be written as a sum of positive squares in only one way, i.e., 1058841 + 38416 = 1029^2 + 196^2 .

It is not a de Polignac number, because 1097257 - 2¹¹ = 1095209 is a prime.

It is the 1048-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097237) by changing a digit.

It is a nontrivial repunit in base 1047.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2173 + ... + 2629.

2^1097257 is an apocalyptic number.

It is an amenable number.

1097257 is a deficient number, since it is larger than the sum of its proper divisors (185601).

1097257 is an frugal number, since it uses more digits than its factorization.

1097257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 464 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 1097257 is about 1047.5003579952. The cubic root of 1097257 is about 103.1421357506.

The spelling of 1097257 in words is "one million, ninety-seven thousand, two hundred fifty-seven".