The Meaning of Numbers: The Number 55
One meaning of number 55 is linked to King Manasseh of Judah. He was the longest reigning monarch of either the Kingdom of Judah or Israel at 55 years (2Kings 21:1, 2Chronicles 33:1). He first co-ruled with his father, the righteous Hezekiah, from 696 to 686 B.C. He then became sole king from 686 until his death in 642.
Manasseh's reign of 55 years marked one of the most evil and violent periods in the history of God's people. The king indulged in various forms of evil, such as rebuilding the pagan altars torn down by his father (2Kings 21:3). This rebuilding even included erecting idolatrous altars within the confines of Jerusalem's temple (verses 4 - 5)! He also willingly burned one of his sons alive as a sacrifice to a pagan deity (verses 6).
Manasseh was so unique in his bloodiness that the Bible states the following.
"Manasseh also shed very much innocent blood until he had filled Jerusalem from one end to another; besides his sin with which he made Judah to sin in doing the evil in the sight of the Lord" (2Kings 21:16).
Apostle Paul and number fifty-five
In 55 A.D., the Apostle Paul is staying in Ephesus preaching the gospel during his third missionary journey. He will be chased out of the metropolis in late 57 when a pagan silversmith stirs up worshippers of Diana to riot against the apostle and what he teaches (Acts 19). Paul's destination after fleeing Ephesus is Macedonia (Acts 20:1 - 3).
The Apostle Paul wrote 100 chapters in his fourteen Biblical books. The last eleven of these, found in most Biblical translations (Galatians - 6, Ephesians - 6, Philippians - 4, Colossians - 4, 1 and 2Thessalonians - 8 total, 1 and 2Timothy - 10 total, Titus - 3, Philemon - 1 and Hebrews - 13) adds up to 55 chapters.
Additional info on Biblical Meaning of 55
The book of Malachi, a minor prophet whose writing is the last Old Testament book in most Biblical translations, has four chapters and 55 verses.