245312297 has 2 divisors, whose sum is σ = 245312298. Its totient is φ = 245312296.

The previous prime is 245312281. The next prime is 245312359. The reversal of 245312297 is 792213542.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147282496 + 98029801 = 12136^2 + 9901^2 .

It is a cyclic number.

It is not a de Polignac number, because 245312297 - 2⁴ = 245312281 is a prime.

It is a Chen prime.

It is equal to p_13436828 and since 245312297 and 13436828 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (245312267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122656148 + 122656149.

It is an arithmetic number, because the mean of its divisors is an integer number (122656149).

Almost surely, 2^245312297 is an apocalyptic number.

It is an amenable number.

245312297 is a deficient number, since it is larger than the sum of its proper divisors (1).

245312297 is an equidigital number, since it uses as much as digits as its factorization.

245312297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 245312297 is about 15662.4486272102. The cubic root of 245312297 is about 625.9982315785.

The spelling of 245312297 in words is "two hundred forty-five million, three hundred twelve thousand, two hundred ninety-seven".