315569 has 2 divisors, whose sum is σ = 315570. Its totient is φ = 315568.

The previous prime is 315559. The next prime is 315589. The reversal of 315569 is 965513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 237169 + 78400 = 487^2 + 280^2 .

It is a cyclic number.

It is not a de Polignac number, because 315569 - 2⁸ = 315313 is a prime.

It is a super-2 number, since 2×315569² = 199167587522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (315529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157784 + 157785.

It is an arithmetic number, because the mean of its divisors is an integer number (157785).

2³¹⁵⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

315569 is a deficient number, since it is larger than the sum of its proper divisors (1).

315569 is an equidigital number, since it uses as much as digits as its factorization.

315569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4050, while the sum is 29.

The square root of 315569 is about 561.7552847994. The cubic root of 315569 is about 68.0818650711.

The spelling of 315569 in words is "three hundred fifteen thousand, five hundred sixty-nine".