315533 has 4 divisors (see below), whose sum is σ = 332160. Its totient is φ = 298908.

The previous prime is 315529. The next prime is 315547. The reversal of 315533 is 335513.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 315533 - 2² = 315529 is a prime.

It is a super-2 number, since 2×315533² = 199122148178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315593) 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, 8285 + ... + 8322.

It is an arithmetic number, because the mean of its divisors is an integer number (83040).

2³¹⁵⁵³³ is an apocalyptic number.

It is an amenable number.

315533 is a deficient number, since it is larger than the sum of its proper divisors (16627).

315533 is a wasteful number, since it uses less digits than its factorization.

315533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16626.

The product of its digits is 675, while the sum is 20.

The square root of 315533 is about 561.7232414633. The cubic root of 315533 is about 68.0792760542.

Subtracting from 315533 its sum of digits (20), we obtain a palindrome (315513).

It can be divided in two parts, 315 and 533, that added together give a palindrome (848).

The spelling of 315533 in words is "three hundred fifteen thousand, five hundred thirty-three".