'Fifty two' in the Bible

He was sixteen years old when he became king, and he reigned fifty-two years in Jerusalem; and his mother’s name was Jecoliah of Jerusalem.

Uzziah was sixteen years old when he became king, and he reigned fifty-two years in Jerusalem; and his mother’s name was Jechiliah of Jerusalem.

So the wall was completed on the twenty-fifth of the month Elul, in fifty-two days.