159 in words
159
one hundred fifty-nine
159 is written one hundred fifty-nine.
Ways to write it
- As an ordinal
- one hundred fifty-ninth
- Roman numeral
- CLIX
- Expanded form
- 100 + 50 + 9
Place value
| Place | Digit | Value |
|---|---|---|
| hundreds | 1 | 100 |
| tens | 5 | 50 |
| ones | 9 | 9 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 53 and 159 (4 factors)
- First 10 multiples
- 159, 318, 477, 636, 795, 954, 1,113, 1,272, 1,431, 1,590
- Square
- 159 × 159 = 25,281
- Square root
- ≈ 12.61
- Sum of the digits
- 1 + 5 + 9 = 15
- Rounded to the nearest 10
- 160
- Rounded to the nearest 100
- 200
- Number before
- 158
- Number after
- 160
- In binary
10011111
Quick check
What number comes just after 159?
Show the answer
160
Is 159 even or odd?
Show the answer
Odd
What is 159 + 10?
Show the answer
169
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 159 in words?
159 is written "one hundred fifty-nine".
Is 159 a prime number?
No. 159 is a composite number, because it has more than two factors.
What are the factors of 159?
The factors of 159 are 1, 3, 53 and 159.
How do you write 159 in Roman numerals?
159 in Roman numerals is CLIX.