2580

2580 = 2 x 2 x 3 x 5 x 43.

2580 is a Keith number (A130010).

2580 is 220110 in base 4.

2580 is divisible by the sum of the cubes of its digits (A034088): 2580/(2³ + 5³ + 8³ + 0³) = 4.

2580 is the sum of the first 38 primes minus the next prime (A166448).

2580 divides 49⁶ - 1.

2580 is a year in which the month of February has five Tuesdays (A143994).

Source: What's Special About This Number?