2561 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.
Prime factorization of 2561:
13 × 197
See below for interesting mathematical facts about the number 2561 from the Numbermatics database.
Names of 2561
- Cardinal: 2561 can be written as Two thousand, five hundred sixty-one.
- Scientific notation: 2.561 × 103
Factors of 2561
Divisors of 2561
Bases of 2561
- Binary: 1010000000012
- Hexadecimal: 0xA01
- Base-36: 1Z5
Squares and roots of 2561
Scales and comparisonsHow big is 2561?
- 2,561 seconds is equal to 42 minutes, 41 seconds.
To count from 1 to 2,561 would take you about forty-two 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 2561 cubic inches would be around 1.1 feet tall.
Recreational maths with 2561
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Cite this page
"Number 2561 - Facts about the integer". Numbermatics.com. 2020. Web. 4 June 2020.
Numbermatics. (2020). Number 2561 - Facts about the integer. Retrieved 4 June 2020, from https://numbermatics.com/n/2561/
Numbermatics. 2020. "Number 2561 - Facts about the integer". https://numbermatics.com/n/2561/
The information we have on file for 2561 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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