315666451 has 2 divisors, whose sum is σ = 315666452. Its totient is φ = 315666450.

The previous prime is 315666431. The next prime is 315666457. The reversal of 315666451 is 154666513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315666451 - 2¹⁷ = 315535379 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 315666451.

It is not a weakly prime, because it can be changed into another prime (315666457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157833225 + 157833226.

It is an arithmetic number, because the mean of its divisors is an integer number (157833226).

Almost surely, 2^315666451 is an apocalyptic number.

315666451 is a deficient number, since it is larger than the sum of its proper divisors (1).

315666451 is an equidigital number, since it uses as much as digits as its factorization.

315666451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 37.

The square root of 315666451 is about 17767.0045590133. The cubic root of 315666451 is about 680.8887247991. Note that the first 3 decimals are identical.

The spelling of 315666451 in words is "three hundred fifteen million, six hundred sixty-six thousand, four hundred fifty-one".