Number Gossip

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Unique Properties of 145

  • 145 is the smallest number (besides the trivial cases of 1 and 2) that is the sum of the factorials of its digits: 145 = 1! + 4! + 5!

Rare Properties of 145

Pentagonal

Common Properties of 145

Composite
Deficient
Odd
Odious
Square-free
Ulam