# 5581

## 5,581 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 5581 look like?

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

5581 is a prime number. Like all primes (except two), it is an odd number.

## Prime factorization of 5581:

### 5581

See below for interesting mathematical facts about the number 5581 from the Numbermatics database.

### Names of 5581

• Cardinal: 5581 can be written as Five thousand, five hundred eighty-one.

### Scientific notation

• Scientific notation: 5.581 × 103

### Factors of 5581

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 5581

### Divisors of 5581

• Number of divisors d(n): 2
• Complete list of divisors:
• Sum of all divisors σ(n): 5582
• Sum of proper divisors (its aliquot sum) s(n): 1
• 5581 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 5580

### Bases of 5581

• Binary: 10101110011012
• Base-36: 4B1

### Squares and roots of 5581

• 5581 squared (55812) is 31147561
• 5581 cubed (55813) is 173834537941
• The square root of 5581 is 74.7060907825
• The cube root of 5581 is 17.7379737355

### Scales and comparisons

How big is 5581?
• 5,581 seconds is equal to 1 hour, 33 minutes, 1 second.
• To count from 1 to 5,581 would take you about thirty-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 5581 cubic inches would be around 1.5 feet tall.

### Recreational maths with 5581

• 5581 backwards is 1855
• The number of decimal digits it has is: 4
• The sum of 5581's digits is 19
• More coming soon!