The Number 551: Properties and MeaningsPrime Factors of 551=19x29.
551 is a Centered Decagonal Number.
551 is the number of trees with 12 vertices.
551 Ortrud is a minor planet orbiting the Sun. It is located in the Main Belt.
The Year 551 ADIn the year 551 AD Beirut was destroyed by an earthquake and tsunami.
In the year 551 AD Jordanes published The Origin and Deeds of the Goths.