247235297 has 2 divisors, whose sum is σ = 247235298. Its totient is φ = 247235296.

The previous prime is 247235231. The next prime is 247235357. The reversal of 247235297 is 792532742.

247235297 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217739536 + 29495761 = 14756^2 + 5431^2 .

It is a cyclic number.

It is not a de Polignac number, because 247235297 - 2¹⁶ = 247169761 is a prime.

It is a super-2 number, since 2×247235297² = 122250584165356418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (247235227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123617648 + 123617649.

It is an arithmetic number, because the mean of its divisors is an integer number (123617649).

Almost surely, 2^247235297 is an apocalyptic number.

It is an amenable number.

247235297 is a deficient number, since it is larger than the sum of its proper divisors (1).

247235297 is an equidigital number, since it uses as much as digits as its factorization.

247235297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 41.

The square root of 247235297 is about 15723.7176583657. The cubic root of 247235297 is about 627.6297066836.

The spelling of 247235297 in words is "two hundred forty-seven million, two hundred thirty-five thousand, two hundred ninety-seven".