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 symbolized by an integer and an exclamation tag. In Mathematics, factorial is a multiplication operation of natural numbers .

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

Symbolically, it is symbolized as "!".

The function is used, among other things, to find the "n" way things can be arranged .

To find the factorial of any given number, substitute the exact value for n in the given formula :

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

The expansion of the formula provides numbers to be multiplied together with each other to obtain the factorial of the number.

We can also determine a factorial from the prior one. The factorial of any number is that number replicated 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