21,559 in words
21,559
twenty-one thousand five hundred fifty-nine
21,559 is written twenty-one thousand five hundred fifty-nine.
Ways to write it
- As an ordinal
- twenty-one thousand five hundred fifty-ninth
- Expanded form
- 20,000 + 1,000 + 500 + 50 + 9
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 5 | 500 |
| tens | 5 | 50 |
| ones | 9 | 9 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Prime
- Factors
- 1 and 21,559 (2 factors)
- First 10 multiples
- 21,559, 43,118, 64,677, 86,236, 107,795, 129,354, 150,913, 172,472, 194,031, 215,590
- Square
- 21,559 × 21,559 = 464,790,481
- Square root
- ≈ 146.83
- Sum of the digits
- 2 + 1 + 5 + 5 + 9 = 22
- Rounded to the nearest 10
- 21,560
- Rounded to the nearest 100
- 21,600
- Rounded to the nearest 1000
- 22,000
- Number before
- 21,558
- Number after
- 21,560
- In binary
101010000110111
Quick check
What number comes just after 21,559?
Show the answer
21,560
Is 21,559 even or odd?
Show the answer
Odd
What is 21,559 + 10?
Show the answer
21,569
Practice with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Number Patterns
Find the missing number in a sequence.Frequently asked questions
How do you write 21,559 in words?
21,559 is written "twenty-one thousand five hundred fifty-nine".
Is 21,559 a prime number?
Yes. 21,559 is a prime number: its only factors are 1 and 21,559.
What are the factors of 21,559?
The factors of 21,559 are 1 and 21,559.