13522530 has 48 divisors (see below), whose sum is σ = 37756800. Its totient is φ = 3090528.

The previous prime is 13522499. The next prime is 13522549. The reversal of 13522530 is 3522531.

13522530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 13522497 and 13522506.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3130 + ... + 6069.

It is an arithmetic number, because the mean of its divisors is an integer number (786600).

Almost surely, 2^13522530 is an apocalyptic number.

13522530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13522530 is an abundant number, since it is smaller than the sum of its proper divisors (24234270).

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

13522530 is a wasteful number, since it uses less digits than its factorization.

13522530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9223 (or 9216 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 13522530 is about 3677.2992807222. The cubic root of 13522530 is about 238.2425439755.

Subtracting from 13522530 its reverse (3522531), we obtain a palindrome (9999999).

The spelling of 13522530 in words is "thirteen million, five hundred twenty-two thousand, five hundred thirty".