297421 has 2 divisors, whose sum is σ = 297422. Its totient is φ = 297420.

The previous prime is 297403. The next prime is 297439. The reversal of 297421 is 124792.

It is a balanced prime because it is at equal distance from previous prime (297403) and next prime (297439).

It can be written as a sum of positive squares in only one way, i.e., 171396 + 126025 = 414^2 + 355^2 .

It is a cyclic number.

It is not a de Polignac number, because 297421 - 2⁹ = 296909 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (297481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148710 + 148711.

It is an arithmetic number, because the mean of its divisors is an integer number (148711).

2²⁹⁷⁴²¹ is an apocalyptic number.

It is an amenable number.

297421 is a deficient number, since it is larger than the sum of its proper divisors (1).

297421 is an equidigital number, since it uses as much as digits as its factorization.

297421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 25.

The square root of 297421 is about 545.3631817422. The cubic root of 297421 is about 66.7509129381.

The spelling of 297421 in words is "two hundred ninety-seven thousand, four hundred twenty-one".