445 is an odd composite number composed of two prime numbers multiplied together.

What does the number 445 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

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 forty-five.

Scientific notation

  • Scientific notation: 4.45 × 102

Factors of 445

  • Number of distinct prime factors ω(n): 2
  • Total number of prime factors Ω(n): 2
  • Sum of prime factors: 94

Divisors of 445

  • Number of divisors d(n): 4
  • Complete list of divisors:
    1 5 89 445
  • Sum of all divisors σ(n): 540
  • Sum of proper divisors (its aliquot sum) s(n): 95
  • 445 is a deficient number, because the sum of its proper divisors (95) is less than itself. Its deficiency is 350

Bases of 445

  • Binary: 1101111012
  • Hexadecimal: 0x1BD
  • Base-36: CD

Squares and roots of 445

  • 445 squared (4452) is 198025
  • 445 cubed (4453) is 88121125
  • The square root of 445 is 21.0950231097
  • The cube root of 445 is 7.6346067215

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 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 445 cubic inches would be around 0.6 feet tall.

Recreational maths with 445

  • 445 backwards is 544
  • The number of decimal digits it has is: 3
  • The sum of 445's digits is 13
  • More coming soon!

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"Number 445 - Facts about the integer". Numbermatics.com. 2023. Web. 3 February 2023.

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Numbermatics. (2023). Number 445 - Facts about the integer. Retrieved 3 February 2023, from https://numbermatics.com/n/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!

Keywords: Divisors of 445, math, Factors of 445, curriculum, school, college, exams, university, Prime factorization of 445, STEM, science, technology, engineering, physics, economics, calculator, four hundred forty-five.

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