An interesting fact about the number 50 is that this number is stated 154 times in the Bible. The first book of the Bible, which is Genesis, contains 50 chapters. Pentecost, also called Shavuot, is a Jewish feast day that occurs 50 days after Passover.
However, this Jewish holiday is unrelated to the Christian Pentecost celebration. Another biblical association of the number 50 is that it can mean deliverance. Every 50 year period was called Jubilee Year, and ancient Israelites were supposed to cancel the debts of their debtors.
In math, there also are some interesting facts about the number 50. For example, this number is the smallest number that is expressed as the addition of two squares, which are 1^2 + 7^2 = 5^2 + 5^2 =50. This number can also be written by adding the three squares of 3, 4 and 5, or 3^2 + 4^2 + 5^2.