297240913 has 2 divisors, whose sum is σ = 297240914. Its totient is φ = 297240912.

The previous prime is 297240901. The next prime is 297240941. The reversal of 297240913 is 319042792.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238764304 + 58476609 = 15452^2 + 7647^2 .

It is a cyclic number.

It is not a de Polignac number, because 297240913 - 2²⁵ = 263686481 is a prime.

It is a super-2 number, since 2×297240913² = 176704320722147138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (297340913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148620456 + 148620457.

It is an arithmetic number, because the mean of its divisors is an integer number (148620457).

Almost surely, 2^297240913 is an apocalyptic number.

It is an amenable number.

297240913 is a deficient number, since it is larger than the sum of its proper divisors (1).

297240913 is an equidigital number, since it uses as much as digits as its factorization.

297240913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 297240913 is about 17240.6761178325. The cubic root of 297240913 is about 667.3743776464.

The spelling of 297240913 in words is "two hundred ninety-seven million, two hundred forty thousand, nine hundred thirteen".