# 1591

## 1,591 is an odd composite number composed of two prime numbers multiplied together.

What does the number 1591 look like?

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

1591 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 1591:

### 37 × 43

See below for interesting mathematical facts about the number 1591 from the Numbermatics database.

### Names of 1591

• Cardinal: 1591 can be written as One thousand, five hundred ninety-one.

### Scientific notation

• Scientific notation: 1.591 × 103

### Factors of 1591

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 80

### Divisors of 1591

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 1672
• Sum of proper divisors (its aliquot sum) s(n): 81
• 1591 is a deficient number, because the sum of its proper divisors (81) is less than itself. Its deficiency is 1510

### Bases of 1591

• Binary: 110001101112
• Base-36: 187

### Squares and roots of 1591

• 1591 squared (15912) is 2531281
• 1591 cubed (15913) is 4027268071
• The square root of 1591 is 39.8873413501
• The cube root of 1591 is 11.6740995719

### Scales and comparisons

How big is 1591?
• 1,591 seconds is equal to 26 minutes, 31 seconds.
• To count from 1 to 1,591 would take you about twenty-six 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 1591 cubic inches would be around 1 feet tall.

### Recreational maths with 1591

• 1591 backwards is 1951
• The number of decimal digits it has is: 4
• The sum of 1591's digits is 16
• More coming soon!