55 is a positive integer between 54 and 56.

Properties Edit

55 is an odd composite number.

55 is the 10th triangular number, and therefore the number of tiles in a double-nine domino set.

55 is the 5th heptagonal number.

55 is equal to 11!!!!!!, the sextuple factorial of 11.

55 is a repdigit number.

55 is the 10th Fibonacci number.

In googology Edit

SuperJedi224 calls this number Fibonax.[1]


See also Edit

Sources Edit

  1. Naming Large Fibonacci Numbers
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