15520560 has 80 divisors (see below), whose sum is σ = 52496640. Its totient is φ = 3761920.

The previous prime is 15520559. The next prime is 15520567. The reversal of 15520560 is 6502551.

15520560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 15520560.

It is not an unprimeable number, because it can be changed into a prime (15520567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300 + ... + 5579.

It is an arithmetic number, because the mean of its divisors is an integer number (656208).

Almost surely, 2^15520560 is an apocalyptic number.

15520560 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 15520560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26248320).

15520560 is an abundant number, since it is smaller than the sum of its proper divisors (36976080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15520560 is a wasteful number, since it uses less digits than its factorization.

15520560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5906 (or 5900 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 15520560 is about 3939.6141943089. The cubic root of 15520560 is about 249.4417409821.

Subtracting from 15520560 its reverse (6502551), we obtain a square (9018009 = 3003²).

The spelling of 15520560 in words is "fifteen million, five hundred twenty thousand, five hundred sixty".