# 51840

## 51,840 is an even composite number composed of three prime numbers multiplied together.

What does the number 51840 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 80 divisors.

51840 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eighty divisors.

## Prime factorization of 51840:

### 27 × 34 × 5

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 5)

See below for interesting mathematical facts about the number 51840 from the Numbermatics database.

### Names of 51840

• Cardinal: 51840 can be written as Fifty-one thousand, eight hundred forty.

### Scientific notation

• Scientific notation: 5.184 × 104

### Factors of 51840

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 10

### Divisors of 51840

• Number of divisors d(n): 80
• Complete list of divisors:
• Sum of all divisors σ(n): 185130
• Sum of proper divisors (its aliquot sum) s(n): 133290
• 51840 is an abundant number, because the sum of its proper divisors (133290) is greater than itself. Its abundance is 81450

### Bases of 51840

• Binary: 11001010100000002
• Base-36: 1400

### Squares and roots of 51840

• 51840 squared (518402) is 2687385600
• 51840 cubed (518403) is 139314069504000
• The square root of 51840 is 227.6839915321
• The cube root of 51840 is 37.2867900715

### Scales and comparisons

How big is 51840?
• 51,840 seconds is equal to 14 hours, 24 minutes.
• To count from 1 to 51,840 would take you about fourteen 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 51840 cubic inches would be around 3.1 feet tall.

### Recreational maths with 51840

• 51840 backwards is 04815
• 51840 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 51840's digits is 18
• More coming soon!