15,021 in words
15,021
fifteen thousand and twenty-one
15,021 is written fifteen thousand and twenty-one.
Ways to write it
- As an ordinal
- fifteen thousand and twenty-first
- Expanded form
- 10,000 + 5,000 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 1 | 10,000 |
| thousands | 5 | 5,000 |
| hundreds | 0 | 0 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 9, 1,669, 5,007 and 15,021 (6 factors)
- First 10 multiples
- 15,021, 30,042, 45,063, 60,084, 75,105, 90,126, 105,147, 120,168, 135,189, 150,210
- Square
- 15,021 × 15,021 = 225,630,441
- Square root
- ≈ 122.56
- Sum of the digits
- 1 + 5 + 0 + 2 + 1 = 9
- Rounded to the nearest 10
- 15,020
- Rounded to the nearest 100
- 15,000
- Rounded to the nearest 1000
- 15,000
- Number before
- 15,020
- Number after
- 15,022
- In binary
11101010101101
Quick check
What number comes just after 15,021?
Show the answer
15,022
Is 15,021 even or odd?
Show the answer
Odd
What is 15,021 + 10?
Show the answer
15,031
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 15,021 in words?
15,021 is written "fifteen thousand and twenty-one".
Is 15,021 a prime number?
No. 15,021 is a composite number, because it has more than two factors.
What are the factors of 15,021?
The factors of 15,021 are 1, 3, 9, 1,669, 5,007 and 15,021.