What is 55 factorial ?

To find 55 factorial, or 55!, simply use the formula that multiplies the number 55 by all positive whole numbers less than it.

Let's look at how to calculate the Factorial of Fifty-five :

  55! is exactly : 12696403353658275925965100847566516959580321051449436762275840000000000000

  Factorial of 55 can be calculated as:
55! = 55 x 54 x 53 x 52 x ... x 3 x 2 x 1

  The number of trailing zeros in 55! is 13

  The number of digits in 55 factorial is 74.

• 51 Factorial
• 52 Factorial
• 53 Factorial
• 54 Factorial
• Factorial of 56
• Factorial of 57
• Factorial of 58
• Factorial of 59

A factorial is represented by an integer and an exclamation mark. In Mathematics, factorial is a multiplication process of natural numbers .

It multiplies the number by every basic number that is less than it .

Symbolically, it is listed as "!".

The function is used, among other things, to get the "n" way objects can be determined .

To find the factorial of any given number, change the exact value for n in the given rule :

n! = n × (n-1) × (n-2) × (n-3) × ….× 3 × 2 × 1

The expansion of the formula provides the numbers to be replicated at the same time to have the factorial of the number.

We can also work out a factorial from the previous one. The factorial of any number is that number times the factorial of (that number minus 1).

So the rule is : n! = n × (n−1)!

Example :
55! Factorial = 55 x 54 x 53 x 52 x ... x 3 x 2 x 1 = 55 × 54! = 12696403353658275925965100847566516959580321051449436762275840000000000000

The best use of factorial is in Combinations and Permutations.

Example : Determine how to arrange letters without repeating?

There one way for 1 letter "a":
2 ways for two letters "ab": ab, ba.
There are 6 ways for 3 letters "abc": abc acb cab bac bca.
There are 24 ways for 1234 of the letters "abcd"

55 in French

55 in English

Factors of 55