12549 has 8 divisors (see below), whose sum is σ = 17280. Its totient is φ = 8096.

The previous prime is 12547. The next prime is 12553. The reversal of 12549 is 94521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12549 - 2¹ = 12547 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97 + ... + 185.

It is an arithmetic number, because the mean of its divisors is an integer number (2160).

2¹²⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

12549 is a deficient number, since it is larger than the sum of its proper divisors (4731).

12549 is an equidigital number, since it uses as much as digits as its factorization.

12549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139.

The product of its digits is 360, while the sum is 21.

The square root of 12549 is about 112.0223192047. The cubic root of 12549 is about 23.2382296765.

It can be divided in two parts, 12 and 549, that added together give a triangular number (561 = T₃₃).

The spelling of 12549 in words is "twelve thousand, five hundred forty-nine".