# 1655

## 1,655 is an odd composite number composed of two prime numbers multiplied together.

What does the number 1655 look like?

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

1655 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 1655:

### 5 × 331

See below for interesting mathematical facts about the number 1655 from the Numbermatics database.

### Names of 1655

• Cardinal: 1655 can be written as One thousand, six hundred fifty-five.

### Scientific notation

• Scientific notation: 1.655 × 103

### Factors of 1655

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 336

### Divisors of 1655

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 1992
• Sum of proper divisors (its aliquot sum) s(n): 337
• 1655 is a deficient number, because the sum of its proper divisors (337) is less than itself. Its deficiency is 1318

### Bases of 1655

• Binary: 110011101112
• Base-36: 19Z

### Squares and roots of 1655

• 1655 squared (16552) is 2739025
• 1655 cubed (16553) is 4533086375
• The square root of 1655 is 40.6816912137
• The cube root of 1655 is 11.8285814861

### Scales and comparisons

How big is 1655?
• 1,655 seconds is equal to 27 minutes, 35 seconds.
• To count from 1 to 1,655 would take you about twenty-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 1655 cubic inches would be around 1 feet tall.

### Recreational maths with 1655

• 1655 backwards is 5561
• The number of decimal digits it has is: 4
• The sum of 1655's digits is 17
• More coming soon!