+**45** is the [natural number](/wiki/Natural_Number) that follows 44 and precedes 46. This integer is notably a [triangular number](/wiki/Triangular_Number) and features in diverse contexts, from geometry to popular culture.
+## See also
+- [Composite Number](/wiki/Composite_Number)
+- [Harshad Number](/wiki/Harshad_Number)
+- [Number Theory](/wiki/Number_Theory)
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