# 8161

## 8,161 is a prime number. Like all primes greater than two, it is odd and has no factors apart from itself and one.

What does the number 8161 look like?

As a prime, it is not composed of any other numbers and has no internal structure.

8161 is a prime number. Like all primes (except two), it is an odd number.

## Prime factorization of 8161:

### 8161

See below for interesting mathematical facts about the number 8161 from the Numbermatics database.

### Names of 8161

• Cardinal: 8161 can be written as Eight thousand, one hundred sixty-one.

### Scientific notation

• Scientific notation: 8.161 × 103

### Factors of 8161

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 8161

### Divisors of 8161

• Number of divisors d(n): 2
• Complete list of divisors:
• Sum of all divisors σ(n): 8162
• Sum of proper divisors (its aliquot sum) s(n): 1
• 8161 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 8160

### Bases of 8161

• Binary: 11111111000012
• Base-36: 6AP

### Squares and roots of 8161

• 8161 squared (81612) is 66601921
• 8161 cubed (81613) is 543538277281
• The square root of 8161 is 90.3382532485
• The cube root of 8161 is 20.1332765617

### Scales and comparisons

How big is 8161?
• 8,161 seconds is equal to 2 hours, 16 minutes, 1 second.
• To count from 1 to 8,161 would take you about two hours.

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 8161 cubic inches would be around 1.7 feet tall.

### Recreational maths with 8161

• 8161 backwards is 1618
• The number of decimal digits it has is: 4
• The sum of 8161's digits is 16
• More coming soon!

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The information we have on file for 8161 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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