165
165 is an odd composite number composed of three prime numbers multiplied together.
165 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 165:
3^{} × 5^{} × 11^{}
See below for interesting mathematical facts about the number 165 from the Numbermatics database.
Names of 165
 Cardinal: 165 can be written as One hundred sixtyfive.
Scientific notation
 Scientific notation: 1.65 × 10^{2}
Factors of 165
Divisors of 165
Bases of 165
 Binary: 10100101_{2}
 Hexadecimal: 0xA5
 Base36: 4L
Squares and roots of 165
Scales and comparisons
How big is 165? 165 seconds is equal to 2 minutes, 45 seconds.

To count from 1 to 165 would take you about twentytwo seconds.
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 randomlychosen 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 165 cubic inches would be around 0.5 feet tall.
Recreational maths with 165
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The information we have on file for 165 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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