297881 has 2 divisors, whose sum is σ = 297882. Its totient is φ = 297880.

The previous prime is 297853. The next prime is 297889. The reversal of 297881 is 188792.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198025 + 99856 = 445^2 + 316^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-297881 is a prime.

It is a super-2 number, since 2×297881² = 177466180322, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 297881.

It is not a weakly prime, because it can be changed into another prime (297889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148940 + 148941.

It is an arithmetic number, because the mean of its divisors is an integer number (148941).

2²⁹⁷⁸⁸¹ is an apocalyptic number.

It is an amenable number.

297881 is a deficient number, since it is larger than the sum of its proper divisors (1).

297881 is an equidigital number, since it uses as much as digits as its factorization.

297881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 35.

The square root of 297881 is about 545.7847561081. The cubic root of 297881 is about 66.7853081821.

The spelling of 297881 in words is "two hundred ninety-seven thousand, eight hundred eighty-one".