315564461 has 2 divisors, whose sum is σ = 315564462. Its totient is φ = 315564460.

The previous prime is 315564433. The next prime is 315564463. The reversal of 315564461 is 164465513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 309971236 + 5593225 = 17606^2 + 2365^2 .

It is an emirp because it is prime and its reverse (164465513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315564461 - 2⁶ = 315564397 is a prime.

It is a Sophie Germain prime.

Together with 315564463, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315564463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157782230 + 157782231.

It is an arithmetic number, because the mean of its divisors is an integer number (157782231).

Almost surely, 2^315564461 is an apocalyptic number.

It is an amenable number.

315564461 is a deficient number, since it is larger than the sum of its proper divisors (1).

315564461 is an equidigital number, since it uses as much as digits as its factorization.

315564461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 35.

The square root of 315564461 is about 17764.1341190614. The cubic root of 315564461 is about 680.8153865004.

The spelling of 315564461 in words is "three hundred fifteen million, five hundred sixty-four thousand, four hundred sixty-one".