315563 has 4 divisors (see below), whose sum is σ = 316968. Its totient is φ = 314160.

The previous prime is 315559. The next prime is 315569. The reversal of 315563 is 365513.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 315563 - 2² = 315559 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 315563.

It is not an unprimeable number, because it can be changed into a prime (315569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281 + ... + 842.

It is an arithmetic number, because the mean of its divisors is an integer number (79242).

2³¹⁵⁵⁶³ is an apocalyptic number.

315563 is a deficient number, since it is larger than the sum of its proper divisors (1405).

315563 is a wasteful number, since it uses less digits than its factorization.

315563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404.

The product of its digits is 1350, while the sum is 23.

The square root of 315563 is about 561.7499443703. The cubic root of 315563 is about 68.0814335819.

It can be divided in two parts, 3155 and 63, that multiplied together give a triangular number (198765 = T₆₃₀).

The spelling of 315563 in words is "three hundred fifteen thousand, five hundred sixty-three".