Square Root Calculator › Square root of 455
Square Root of 455
√455 ≈ 21.330729
455 is not a perfect square, so √455 is an irrational number that is approximately 21.330729. In simplified radical form, √455 = √455.
√455 lies between √441 = 21 and √484 = 22.
| Number | 455 |
| Square root (decimal) | 21.330729 |
| Simplified radical | √455 |
| Perfect square? | No |
| Rational? | No |
Calculate another square root
Nearby square roots
Frequently asked questions
Is 455 a perfect square?
No, 455 is not a perfect square, so its square root is irrational and approximately 21.330729.
What is the square root of 455 in simplest radical form?
√455 = √455 in simplest radical form.