Is 530 a prime number? What are the divisors of 530?

## Parity of 530

530 is an even number, because it is evenly divisible by 2: 530 / 2 = 265.

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## Is 530 a perfect square number?

A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 530 is about 23.022.

Thus, the square root of 530 is not an integer, and therefore 530 is not a square number.

## What is the square number of 530?

The square of a number (here 530) is the result of the product of this number (530) by itself (i.e., 530 × 530); the square of 530 is sometimes called "raising 530 to the power 2", or "530 squared".

The square of 530 is 280 900 because 530 × 530 = 5302 = 280 900.

As a consequence, 530 is the square root of 280 900.

## Number of digits of 530

530 is a number with 3 digits.

## What are the multiples of 530?

The multiples of 530 are all integers evenly divisible by 530, that is all numbers such that the remainder of the division by 530 is zero. There are infinitely many multiples of 530. The smallest multiples of 530 are:

## How to determine whether an integer is a prime number?

To determine the primality of a number, several algorithms can be used. The most naive technique is to test all divisors strictly smaller to the number of which we want to determine the primality (here 530). First, we can eliminate all even numbers greater than 2 (and hence 4, 6, 8…). Then, we can stop this check when we reach the square root of the number of which we want to determine the primality (here the square root is about 23.022). Historically, the sieve of Eratosthenes (dating from the Greek mathematics) implements this technique in a relatively efficient manner.

More modern techniques include the sieve of Atkin, probabilistic algorithms, and the cyclotomic AKS test.

## Numbers near 530

• Preceding numbers: …528, 529
• Following numbers: 531, 532

### Nearest numbers from 530

• Preceding prime number: 523
• Following prime number: 541
Find out whether some integer is a prime number