315565553 has 2 divisors, whose sum is σ = 315565554. Its totient is φ = 315565552.

The previous prime is 315565517. The next prime is 315565583. The reversal of 315565553 is 355565513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 307230784 + 8334769 = 17528^2 + 2887^2 .

It is a cyclic number.

It is not a de Polignac number, because 315565553 - 2⁸ = 315565297 is a prime.

It is not a weakly prime, because it can be changed into another prime (315565583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157782776 + 157782777.

It is an arithmetic number, because the mean of its divisors is an integer number (157782777).

Almost surely, 2^315565553 is an apocalyptic number.

It is an amenable number.

315565553 is a deficient number, since it is larger than the sum of its proper divisors (1).

315565553 is an equidigital number, since it uses as much as digits as its factorization.

315565553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 168750, while the sum is 38.

The square root of 315565553 is about 17764.1648551234. The cubic root of 315565553 is about 680.8161718123.

The spelling of 315565553 in words is "three hundred fifteen million, five hundred sixty-five thousand, five hundred fifty-three".