297147997 has 2 divisors, whose sum is σ = 297147998. Its totient is φ = 297147996.

The previous prime is 297147979. The next prime is 297148021. The reversal of 297147997 is 799741792.

Together with previous prime (297147979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161518681 + 135629316 = 12709^2 + 11646^2 .

It is a cyclic number.

It is not a de Polignac number, because 297147997 - 2¹⁵ = 297115229 is a prime.

It is a super-2 number, since 2×297147997² = 176593864242224018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (297147937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148573998 + 148573999.

It is an arithmetic number, because the mean of its divisors is an integer number (148573999).

Almost surely, 2^297147997 is an apocalyptic number.

It is an amenable number.

297147997 is a deficient number, since it is larger than the sum of its proper divisors (1).

297147997 is an equidigital number, since it uses as much as digits as its factorization.

297147997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2000376, while the sum is 55.

The square root of 297147997 is about 17237.9812333115. The cubic root of 297147997 is about 667.3048311187.

The spelling of 297147997 in words is "two hundred ninety-seven million, one hundred forty-seven thousand, nine hundred ninety-seven".