315066251 has 2 divisors, whose sum is σ = 315066252. Its totient is φ = 315066250.

The previous prime is 315066247. The next prime is 315066277. The reversal of 315066251 is 152660513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 315066251 - 2² = 315066247 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (315066751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157533125 + 157533126.

It is an arithmetic number, because the mean of its divisors is an integer number (157533126).

Almost surely, 2^315066251 is an apocalyptic number.

315066251 is a deficient number, since it is larger than the sum of its proper divisors (1).

315066251 is an equidigital number, since it uses as much as digits as its factorization.

315066251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 315066251 is about 17750.1056616573. The cubic root of 315066251 is about 680.4569096173.

The spelling of 315066251 in words is "three hundred fifteen million, sixty-six thousand, two hundred fifty-one".