# 851

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

What does the number 851 look like?

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

851 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 851:

### 23 × 37

See below for interesting mathematical facts about the number 851 from the Numbermatics database.

### Names of 851

• Cardinal: 851 can be written as Eight hundred fifty-one.

### Scientific notation

• Scientific notation: 8.51 × 102

### Factors of 851

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 60

### Divisors of 851

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 912
• Sum of proper divisors (its aliquot sum) s(n): 61
• 851 is a deficient number, because the sum of its proper divisors (61) is less than itself. Its deficiency is 790

### Bases of 851

• Binary: 11010100112
• Base-36: NN

### Squares and roots of 851

• 851 squared (8512) is 724201
• 851 cubed (8513) is 616295051
• The square root of 851 is 29.1719042917
• The cube root of 851 is 9.4763956935

### Scales and comparisons

How big is 851?
• 851 seconds is equal to 14 minutes, 11 seconds.
• To count from 1 to 851 would take you about seven 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 851 cubic inches would be around 0.8 feet tall.

### Recreational maths with 851

• 851 backwards is 158
• The number of decimal digits it has is: 3
• The sum of 851's digits is 14
• More coming soon!

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"Number 851 - Facts about the integer". Numbermatics.com. 2023. Web. 1 February 2023.

APA style:
Numbermatics. (2023). Number 851 - Facts about the integer. Retrieved 1 February 2023, from https://numbermatics.com/n/851/

Chicago style:
Numbermatics. 2023. "Number 851 - Facts about the integer". https://numbermatics.com/n/851/

The information we have on file for 851 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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