445
445 is an odd composite number composed of two prime numbers multiplied together.
445 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 445:
5^{} × 89^{}
See below for interesting mathematical facts about the number 445 from the Numbermatics database.
Names of 445
 Cardinal: 445 can be written as Four hundred fortyfive.
Scientific notation
 Scientific notation: 4.45 × 10^{2}
Factors of 445
Divisors of 445
Bases of 445
 Binary: 110111101_{2}
 Hexadecimal: 0x1BD
 Base36: CD
Squares and roots of 445
Scales and comparisons
How big is 445? 445 seconds is equal to 7 minutes, 25 seconds.

To count from 1 to 445 would take you about three 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 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 445 cubic inches would be around 0.6 feet tall.
Recreational maths with 445
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The information we have on file for 445 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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