'Fifty' in the Bible

This is how you shall make it: the length of the ark three hundred cubits, its breadth fifty cubits, and its height thirty cubits.

The water prevailed upon the earth one hundred and fifty days.

and the water receded steadily from the earth, and at the end of one hundred and fifty days the water decreased.

Noah lived three hundred and fifty years after the flood.

So all the days of Noah were nine hundred and fifty years, and he died.

Suppose there are fifty righteous within the city; will You indeed sweep it away and not spare the place for the sake of the fifty righteous who are in it?

So the Lord said, “If I find in Sodom fifty righteous within the city, then I will spare the whole place on their account.”

Suppose the fifty righteous are lacking five, will You destroy the whole city because of five?” And He said, “I will not destroy it if I find forty-five there.”