13530555 has 48 divisors (see below), whose sum is σ = 25945920. Its totient is φ = 6488064.

The previous prime is 13530523. The next prime is 13530557. The reversal of 13530555 is 55503531.

13530555 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13530555 - 2⁵ = 13530523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13530557) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17211 + ... + 17979.

It is an arithmetic number, because the mean of its divisors is an integer number (540540).

Almost surely, 2^13530555 is an apocalyptic number.

13530555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13530555 is a deficient number, since it is larger than the sum of its proper divisors (12415365).

13530555 is a wasteful number, since it uses less digits than its factorization.

13530555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820 (or 817 counting only the distinct ones).

The product of its (nonzero) digits is 5625, while the sum is 27.

The square root of 13530555 is about 3678.3902729319. The cubic root of 13530555 is about 238.2896633220.

The spelling of 13530555 in words is "thirteen million, five hundred thirty thousand, five hundred fifty-five".