297397853 has 2 divisors, whose sum is σ = 297397854. Its totient is φ = 297397852.

The previous prime is 297397799. The next prime is 297397909. The reversal of 297397853 is 358793792.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 294019609 + 3378244 = 17147^2 + 1838^2 .

It is a cyclic number.

It is not a de Polignac number, because 297397853 - 2¹⁰ = 297396829 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 297397795 and 297397804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (297327853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148698926 + 148698927.

It is an arithmetic number, because the mean of its divisors is an integer number (148698927).

Almost surely, 2^297397853 is an apocalyptic number.

It is an amenable number.

297397853 is a deficient number, since it is larger than the sum of its proper divisors (1).

297397853 is an equidigital number, since it uses as much as digits as its factorization.

297397853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2857680, while the sum is 53.

The square root of 297397853 is about 17245.2269628440. The cubic root of 297397853 is about 667.4918124747.

The spelling of 297397853 in words is "two hundred ninety-seven million, three hundred ninety-seven thousand, eight hundred fifty-three".