It is a self number, because there is not a number n which added to its sum of digits gives 15520.
215520 is an apocalyptic number.
15520 is a gapful number since it is divisible by the number (10) 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 15520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18522).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
15520 is an equidigital number, since it uses as much as digits as its factorization.
15520 is an evil number, because the sum of its binary digits is even.
The square root of 15520 is about 124.5792920192. The cubic root of 15520 is about 24.9438740896.
The spelling of 15520 in words is "fifteen thousand, five hundred twenty".