Number Gossip

(Enter a number and I'll tell you everything you wanted to know about it but were afraid to ask.)

Unique Properties of 49

  • 49 is the number of strings on a harp and the number of keys on a celesta
  • 49 is the smallest number which is the concatenation of two prime squares creating another prime square
  • 49 is the largest prime square which is greater than the product of all lesser primes
  • 49 is the smallest number with the property that it and its neighbors are squareful

Rare Properties of 49

Square

Common Properties of 49

Composite
Deficient
Happy
Lucky
Odd
Odious
Powerful