297983513 has 2 divisors, whose sum is σ = 297983514. Its totient is φ = 297983512.

The previous prime is 297983503. The next prime is 297983519. The reversal of 297983513 is 315389792.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188320729 + 109662784 = 13723^2 + 10472^2 .

It is a cyclic number.

It is not a de Polignac number, because 297983513 - 2¹⁴ = 297967129 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (297983519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148991756 + 148991757.

It is an arithmetic number, because the mean of its divisors is an integer number (148991757).

Almost surely, 2^297983513 is an apocalyptic number.

It is an amenable number.

297983513 is a deficient number, since it is larger than the sum of its proper divisors (1).

297983513 is an equidigital number, since it uses as much as digits as its factorization.

297983513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 47.

The square root of 297983513 is about 17262.1989618936. The cubic root of 297983513 is about 667.9296848609.

The spelling of 297983513 in words is "two hundred ninety-seven million, nine hundred eighty-three thousand, five hundred thirteen".