297161253 has 12 divisors (see below), whose sum is σ = 429470860. Its totient is φ = 197997696.

The previous prime is 297161239. The next prime is 297161269. The reversal of 297161253 is 352161792.

It can be written as a sum of positive squares in 2 ways, for example, as 291487329 + 5673924 = 17073^2 + 2382^2 .

It is not a de Polignac number, because 297161253 - 2²¹ = 295064101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (297161453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10125 + ... + 26397.

Almost surely, 2^297161253 is an apocalyptic number.

It is an amenable number.

297161253 is a deficient number, since it is larger than the sum of its proper divisors (132309607).

297161253 is a wasteful number, since it uses less digits than its factorization.

297161253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18308 (or 18305 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 297161253 is about 17238.3657288039. The cubic root of 297161253 is about 667.3147539646.

The spelling of 297161253 in words is "two hundred ninety-seven million, one hundred sixty-one thousand, two hundred fifty-three".