13522545 has 40 divisors (see below), whose sum is σ = 24506856. Its totient is φ = 7133184.

The previous prime is 13522499. The next prime is 13522549. The reversal of 13522545 is 54522531.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2313441 + 11209104 = 1521^2 + 3348^2 .

It is not a de Polignac number, because 13522545 - 2¹¹ = 13520497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (13522549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 69969 + ... + 70161.

Almost surely, 2^13522545 is an apocalyptic number.

13522545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13522545 is a deficient number, since it is larger than the sum of its proper divisors (10984311).

13522545 is a wasteful number, since it uses less digits than its factorization.

13522545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 374 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 13522545 is about 3677.3013202619. The cubic root of 13522545 is about 238.2426320664.

The spelling of 13522545 in words is "thirteen million, five hundred twenty-two thousand, five hundred forty-five".