21,359 in words
21,359
twenty-one thousand three hundred fifty-nine
21,359 is written twenty-one thousand three hundred fifty-nine.
Ways to write it
- As an ordinal
- twenty-one thousand three hundred fifty-ninth
- Expanded form
- 20,000 + 1,000 + 300 + 50 + 9
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 3 | 300 |
| tens | 5 | 50 |
| ones | 9 | 9 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 13, 31, 53, 403, 689, 1,643 and 21,359 (8 factors)
- First 10 multiples
- 21,359, 42,718, 64,077, 85,436, 106,795, 128,154, 149,513, 170,872, 192,231, 213,590
- Square
- 21,359 × 21,359 = 456,206,881
- Square root
- ≈ 146.15
- Sum of the digits
- 2 + 1 + 3 + 5 + 9 = 20
- Rounded to the nearest 10
- 21,360
- Rounded to the nearest 100
- 21,400
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,358
- Number after
- 21,360
- In binary
101001101101111
Quick check
What number comes just after 21,359?
Show the answer
21,360
Is 21,359 even or odd?
Show the answer
Odd
What is 21,359 + 10?
Show the answer
21,369
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 21,359 in words?
21,359 is written "twenty-one thousand three hundred fifty-nine".
Is 21,359 a prime number?
No. 21,359 is a composite number, because it has more than two factors.
What are the factors of 21,359?
The factors of 21,359 are 1, 13, 31, 53, 403, 689, 1,643 and 21,359.