13521255 has 48 divisors (see below), whose sum is σ = 25017984. Its totient is φ = 6183360.

The previous prime is 13521253. The next prime is 13521271. The reversal of 13521255 is 55212531.

It is a happy number.

It is not a de Polignac number, because 13521255 - 2¹ = 13521253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13521253) 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 47 ways as a sum of consecutive naturals, for example, 59452 + ... + 59678.

It is an arithmetic number, because the mean of its divisors is an integer number (521208).

Almost surely, 2^13521255 is an apocalyptic number.

13521255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13521255 is a deficient number, since it is larger than the sum of its proper divisors (11496729).

13521255 is a wasteful number, since it uses less digits than its factorization.

13521255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284 (or 265 counting only the distinct ones).

The product of its digits is 1500, while the sum is 24.

The square root of 13521255 is about 3677.1259157119. The cubic root of 13521255 is about 238.2350560081.

Adding to 13521255 its reverse (55212531), we get a palindrome (68733786).

The spelling of 13521255 in words is "thirteen million, five hundred twenty-one thousand, two hundred fifty-five".