answersLogoWhite

0


Best Answer

81 is; Natural number, Perfect-square number, Perfect 4th root number, Perfect totient number, Odd Number, Composite Number, etc.

User Avatar

Wiki User

โˆ™ 2009-03-24 16:09:28
This answer is:
๐Ÿ™
0
๐Ÿคจ
0
๐Ÿ˜ฎ
0
User Avatar
Study guides
๐Ÿ““
See all Study Guides
โœ๏ธ
Create a Study Guide

Add your answer:

Earn +20 pts
Q: What kind of a number is 81?
Write your answer...
Submit
Related questions

What kind of number is 81?

It is a square number


What is the LCM of 9 27 and 81?

81; each number is a factor of 81, and it is the smallest you can get.


Is 81 a even number?

No, 81 is an odd number.


Is 81 a prime or composite number?

It is a composite number, you can get 81 by mulitpling 1*81, 3*27, and 9*9.compositeNo the number 81 is not prime it can be divided by nine.composite


Is 81 a prime number?

81 is not a prime number. Its positive integer factors are: 1, 3, 9, 27, 81.81 is a Composite Number.


Is the square root of of 81 over negative three irrational?

No. The square root of 81/(-3) is rational. The square root of [81/(-3)] is imaginary (a kind of complex number).


What is the prime number of 81 is it even or odd?

81 is an odd composite number.


What is 81 over 9 as a whole number?

81/9 = 9


Is 81 a least prime number?

81 is not a prime number. 81 = 3 * 3 * 3 * 3


Who is number 81 on the Chicago Bears?

Number 81 is Rashied Davis.


What is 81 is that a prime?

81 is not prime it's a composite number


What is the square number of 81?

The square number of 81 is 9. 9 x 9 = 81


Is 81 a prime number or a composite number?

81 is a composite number because it has factors other than 1 and itself. 81 is not a prime number. 81 = 3 * 3 * 3 * 3. Its positive integer factors are: 1, 3, 9, 27, 81.


Is -81 an irrational number?

No, -81 is not an irrational number because it can be represented in the form x/y = -81


Is 3 or 81 or 120 or 27 is a square number?

81 is a square number


What is number 81 on the periodic table?

Number 81 on the periodic table is Thallium.


Is 81 a composite or prime number?

81 is a composite number because it has more factors than 1 and itself. The factors of 81 are 1, 3, 9, 27, and 81.


Is the root of 81 an irrational number?

No. The square root of 81 is 9, which is a rational number.


What area of France has 81 on its car number plate?

Tarn has 81 on its number plate.


Is the square of 81 a rational number?

The square root of 81 is 9 which is a rational number


What is the composite numbers for 81?

81 is a composite number.


Is 81 rational or inrational?

81 is a rational number


How do you change 81 over 10 to a mixed number?

81/10 = 81/10


What is the number 81 divisible by?

81 is divisible by 1, 3, 9, 27 and 81


What is the ninth square number?

81