15,997 in words
15,997
fifteen thousand nine hundred ninety-seven
15,997 is written fifteen thousand nine hundred ninety-seven.
Ways to write it
- As an ordinal
- fifteen thousand nine hundred ninety-seventh
- Expanded form
- 10,000 + 5,000 + 900 + 90 + 7
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 1 | 10,000 |
| thousands | 5 | 5,000 |
| hundreds | 9 | 900 |
| tens | 9 | 90 |
| ones | 7 | 7 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 17, 941 and 15,997 (4 factors)
- First 10 multiples
- 15,997, 31,994, 47,991, 63,988, 79,985, 95,982, 111,979, 127,976, 143,973, 159,970
- Square
- 15,997 × 15,997 = 255,904,009
- Square root
- ≈ 126.48
- Sum of the digits
- 1 + 5 + 9 + 9 + 7 = 31
- Rounded to the nearest 10
- 16,000
- Rounded to the nearest 100
- 16,000
- Rounded to the nearest 1000
- 16,000
- Number before
- 15,996
- Number after
- 15,998
- In binary
11111001111101
Quick check
What number comes just after 15,997?
Show the answer
15,998
Is 15,997 even or odd?
Show the answer
Odd
What is 15,997 + 10?
Show the answer
16,007
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 15,997 in words?
15,997 is written "fifteen thousand nine hundred ninety-seven".
Is 15,997 a prime number?
No. 15,997 is a composite number, because it has more than two factors.
What are the factors of 15,997?
The factors of 15,997 are 1, 17, 941 and 15,997.