561 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.
Prime factorization of 561:
3 × 11 × 17
See below for interesting mathematical facts about the number 561 from the Numbermatics database.
Names of 561
- Cardinal: 561 can be written as Five hundred sixty-one.
- Scientific notation: 5.61 × 102
Factors of 561
Divisors of 561
Bases of 561
- Binary: 10001100012
- Hexadecimal: 0x231
- Base-36: FL
Squares and roots of 561
Scales and comparisonsHow big is 561?
- 561 seconds is equal to 9 minutes, 21 seconds.
To count from 1 to 561 would take you about four minutes.
This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
- A cube with a volume of 561 cubic inches would be around 0.7 feet tall.
Recreational maths with 561
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Cite this page
"Number 561 - Facts about the integer". Numbermatics.com. 2020. Web. 19 February 2020.
Numbermatics. (2020). Number 561 - Facts about the integer. Retrieved 19 February 2020, from https://numbermatics.com/n/561/
Numbermatics. 2020. "Number 561 - Facts about the integer". https://numbermatics.com/n/561/
The information we have on file for 561 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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