40,521 in words
40,521
forty thousand five hundred and twenty-one
40,521 is written forty thousand five hundred and twenty-one.
Ways to write it
- As an ordinal
- forty thousand five hundred and twenty-first
- Expanded form
- 40,000 + 500 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 4 | 40,000 |
| thousands | 0 | 0 |
| hundreds | 5 | 500 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 13, 39, 1,039, 3,117, 13,507 and 40,521 (8 factors)
- First 10 multiples
- 40,521, 81,042, 121,563, 162,084, 202,605, 243,126, 283,647, 324,168, 364,689, 405,210
- Square
- 40,521 × 40,521 = 1,641,951,441
- Square root
- ≈ 201.30
- Sum of the digits
- 4 + 0 + 5 + 2 + 1 = 12
- Rounded to the nearest 10
- 40,520
- Rounded to the nearest 100
- 40,500
- Rounded to the nearest 1000
- 41,000
- Number before
- 40,520
- Number after
- 40,522
- In binary
1001111001001001
Quick check
What number comes just after 40,521?
Show the answer
40,522
Is 40,521 even or odd?
Show the answer
Odd
What is 40,521 + 10?
Show the answer
40,531
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 40,521 in words?
40,521 is written "forty thousand five hundred and twenty-one".
Is 40,521 a prime number?
No. 40,521 is a composite number, because it has more than two factors.
What are the factors of 40,521?
The factors of 40,521 are 1, 3, 13, 39, 1,039, 3,117, 13,507 and 40,521.