The Number 51: Properties and MeaningsPrime Factors of 51= 3 x 17.
51 is a Stella Octangula Number.
51 is a Centered Pentagonal Number.
51 is a Pentagonal Number.
51 is an 18-gonal Number.
51 is a Motzkin Number.
The Chemical Element Antimony has an atomic number of 51. It is a brittle, semi-metallic element. It can be used in alloys, pigments and medicine.
Film: Formula 51.
The Year 51 ADIn the year 51 AD the conquest of Wales was completed by the Romans.
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