13265550 has 72 divisors (see below), whose sum is σ = 36560160. Its totient is φ = 3446400.

The previous prime is 13265533. The next prime is 13265561. The reversal of 13265550 is 5556231.

13265550 is a `hidden beast` number, since 1 + 3 + 2 + 655 + 5 + 0 = 666.

13265550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18091 + ... + 18809.

It is an arithmetic number, because the mean of its divisors is an integer number (507780).

Almost surely, 2^13265550 is an apocalyptic number.

13265550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13265550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18280080).

13265550 is an abundant number, since it is smaller than the sum of its proper divisors (23294610).

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

13265550 is a wasteful number, since it uses less digits than its factorization.

13265550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778 (or 770 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 13265550 is about 3642.1902750955. The cubic root of 13265550 is about 236.7237072942.

The spelling of 13265550 in words is "thirteen million, two hundred sixty-five thousand, five hundred fifty".