12984521 has 16 divisors (see below), whose sum is σ = 14814528. Its totient is φ = 11275200.

The previous prime is 12984511. The next prime is 12984527. The reversal of 12984521 is 12548921.

It is a cyclic number.

It is not a de Polignac number, because 12984521 - 2⁶ = 12984457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12984527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24566 + ... + 25088.

It is an arithmetic number, because the mean of its divisors is an integer number (925908).

Almost surely, 2^12984521 is an apocalyptic number.

12984521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12984521 is a deficient number, since it is larger than the sum of its proper divisors (1830007).

12984521 is a wasteful number, since it uses less digits than its factorization.

12984521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632.

The product of its digits is 5760, while the sum is 32.

The square root of 12984521 is about 3603.4040850285. The cubic root of 12984521 is about 235.0401078367.

Subtracting from 12984521 its reverse (12548921), we obtain a square (435600 = 660²).

The spelling of 12984521 in words is "twelve million, nine hundred eighty-four thousand, five hundred twenty-one".