Subtracting from 2520 its product of nonzero digits (20), we obtain a square (2500 = 502).
Adding to 2520 its reverse (252), we get a palindrome (2772).
2520 is nontrivially palindromic in base 11.
2520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is a plaindrome in base 13.
It is a nialpdrome in base 14 and base 15.
It is a zygodrome in base 13.
It is a congruent number.
2520 is a highly composite number, because it has more divisors than any smaller number.
2520 is a superabundant number, because it has a larger abundancy index than any smaller number.
2520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 2520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4680).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2520 is a wasteful number, since it uses less digits than its factorization.
2520 is an evil number, because the sum of its binary digits is even.
The square root of 2520 is about 50.1996015920. The cubic root of 2520 is about 13.6081842319.
The spelling of 2520 in words is "two thousand, five hundred twenty".