13500544 has 32 divisors (see below), whose sum is σ = 27830700. Its totient is φ = 6515712.

The previous prime is 13500493. The next prime is 13500551. The reversal of 13500544 is 44500531.

It can be written as a sum of positive squares in 2 ways, for example, as 12334144 + 1166400 = 3512^2 + 1080^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1894 + ... + 5530.

Almost surely, 2^13500544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13500544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13915350).

13500544 is an abundant number, since it is smaller than the sum of its proper divisors (14330156).

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

13500544 is an equidigital number, since it uses as much as digits as its factorization.

13500544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3680 (or 3668 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 13500544 is about 3674.3086424523. The cubic root of 13500544 is about 238.1133560714.

The spelling of 13500544 in words is "thirteen million, five hundred thousand, five hundred forty-four".