450 in words
450
four hundred and fifty
450 is written four hundred and fifty.
Ways to write it
- As an ordinal
- four hundred and fiftieth
- Roman numeral
- CDL
- Expanded form
- 400 + 50
Place value
| Place | Digit | Value |
|---|---|---|
| hundreds | 4 | 400 |
| tens | 5 | 50 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 150, 225 and 450 (18 factors)
- First 10 multiples
- 450, 900, 1,350, 1,800, 2,250, 2,700, 3,150, 3,600, 4,050, 4,500
- Square
- 450 × 450 = 2,02,500
- Square root
- ≈ 21.21
- Sum of the digits
- 4 + 5 + 0 = 9
- Rounded to the nearest 10
- 450
- Rounded to the nearest 100
- 500
- Number before
- 449
- Number after
- 451
- In binary
111000010
Quick check
What number comes just after 450?
Show the answer
451
Is 450 even or odd?
Show the answer
Even
What is 450 + 10?
Show the answer
460
Practise with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Roman Numerals
Read and write Roman numerals from I to 3,999.Frequently asked questions
How do you write 450 in words?
450 is written "four hundred and fifty".
Is 450 a prime number?
No. 450 is a composite number, because it has more than two factors.
What are the factors of 450?
The factors of 450 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 150, 225 and 450.
How do you write 450 in Roman numerals?
450 in Roman numerals is CDL.