21,250 in words
21,250
twenty-one thousand two hundred fifty
21,250 is written twenty-one thousand two hundred fifty.
Ways to write it
- As an ordinal
- twenty-one thousand two hundred fiftieth
- Expanded form
- 20,000 + 1,000 + 200 + 50
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 2 | 200 |
| tens | 5 | 50 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 5, 10, 17, 25, 34, 50, 85, 125, 170, 250, 425, 625, 850, 1,250, 2,125, 4,250, 10,625 and 21,250 (20 factors)
- First 10 multiples
- 21,250, 42,500, 63,750, 85,000, 106,250, 127,500, 148,750, 170,000, 191,250, 212,500
- Square
- 21,250 × 21,250 = 451,562,500
- Square root
- ≈ 145.77
- Sum of the digits
- 2 + 1 + 2 + 5 + 0 = 10
- Rounded to the nearest 10
- 21,250
- Rounded to the nearest 100
- 21,300
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,249
- Number after
- 21,251
- In binary
101001100000010
Quick check
What number comes just after 21,250?
Show the answer
21,251
Is 21,250 even or odd?
Show the answer
Even
What is 21,250 + 10?
Show the answer
21,260
Practise 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 21,250 in words?
21,250 is written "twenty-one thousand two hundred fifty".
Is 21,250 a prime number?
No. 21,250 is a composite number, because it has more than two factors.
What are the factors of 21,250?
The factors of 21,250 are 1, 2, 5, 10, 17, 25, 34, 50, 85, 125, 170, 250, 425, 625, 850, 1,250, 2,125, 4,250, 10,625 and 21,250.