# 355

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

What does the number 355 look like?

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

355 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 355:

### 5 × 71

See below for interesting mathematical facts about the number 355 from the Numbermatics database.

### Names of 355

• Cardinal: 355 can be written as Three hundred fifty-five.

### Scientific notation

• Scientific notation: 3.55 × 102

### Factors of 355

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 76

### Divisors of 355

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 432
• Sum of proper divisors (its aliquot sum) s(n): 77
• 355 is a deficient number, because the sum of its proper divisors (77) is less than itself. Its deficiency is 278

### Bases of 355

• Binary: 1011000112
• Base-36: 9V

### Squares and roots of 355

• 355 squared (3552) is 126025
• 355 cubed (3553) is 44738875
• The square root of 355 is 18.8414436815
• The cube root of 355 is 7.0806987513

### Scales and comparisons

How big is 355?
• 355 seconds is equal to 5 minutes, 55 seconds.
• To count from 1 to 355 would take you about two 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 355 cubic inches would be around 0.6 feet tall.

### Recreational maths with 355

• 355 backwards is 553
• The number of decimal digits it has is: 3
• The sum of 355's digits is 13
• More coming soon!