Is 21197 a prime number?

21 197 is an odd number, because it is not evenly divisible by 2.

Find out more:

• What is an even 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 21 197 is about 145.592.

Thus, the square root of 21 197 is not an integer, and therefore 21 197 is not a square number.

The square of a number (here 21 197) is the result of the product of this number (21 197) by itself (i.e., 21 197 × 21 197); the square of 21 197 is sometimes called "raising 21 197 to the power 2", or "21 197 squared".

The square of 21 197 is 449 312 809 because 21 197 × 21 197 = 21 197² = 449 312 809.

As a consequence, 21 197 is the square root of 449 312 809.

21 197 is a number with 5 digits.

The multiples of 21 197 are all integers evenly divisible by 21 197, that is all numbers such that the remainder of the division by 21 197 is zero. There are infinitely many multiples of 21 197. The smallest multiples of 21 197 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 21 197 too, since 0 × 21 197 = 0
• 21 197: indeed, 21 197 is a multiple of itself, since 21 197 is evenly divisible by 21 197 (we have 21 197 / 21 197 = 1, so the remainder of this division is indeed zero)
• 42 394: indeed, 42 394 = 21 197 × 2
• 63 591: indeed, 63 591 = 21 197 × 3
• 84 788: indeed, 84 788 = 21 197 × 4
• 105 985: indeed, 105 985 = 21 197 × 5
• etc.

• Preceding numbers: …21 195, 21 196
• Following numbers: 21 198, 21 199…

Nearest numbers from 21 197

• Preceding prime number: 21 193
• Following prime number: 21 211