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The Number 554: Properties and Meanings
Prime Factors of 554=2x277.The maximal number of regions into which a plane can be divided by 24 circles=554.
554 is the number of self-dual planar graphs with 20 edges.
The Year 554 AD
In the year 554 AD Ravenna became the seat of the Byzantine military governor in Italy.
The Main Number Sections:
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