13521475 has 12 divisors (see below), whose sum is σ = 18291240. Its totient is φ = 9833600.

The previous prime is 13521461. The next prime is 13521491. The reversal of 13521475 is 57412531.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-13521475 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24310 + ... + 24859.

It is an arithmetic number, because the mean of its divisors is an integer number (1524270).

Almost surely, 2^13521475 is an apocalyptic number.

13521475 is a deficient number, since it is larger than the sum of its proper divisors (4769765).

13521475 is a wasteful number, since it uses less digits than its factorization.

13521475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49190 (or 49185 counting only the distinct ones).

The product of its digits is 4200, while the sum is 28.

The square root of 13521475 is about 3677.1558302579. The cubic root of 13521475 is about 238.2363480831.

The spelling of 13521475 in words is "thirteen million, five hundred twenty-one thousand, four hundred seventy-five".