12549213 has 12 divisors (see below), whose sum is σ = 19193148. Its totient is φ = 7873920.

The previous prime is 12549209. The next prime is 12549217. The reversal of 12549213 is 31294521.

It is an interprime number because it is at equal distance from previous prime (12549209) and next prime (12549217).

It can be written as a sum of positive squares in 2 ways, for example, as 11471769 + 1077444 = 3387^2 + 1038^2 .

It is not a de Polignac number, because 12549213 - 2² = 12549209 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12549217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40858 + ... + 41163.

It is an arithmetic number, because the mean of its divisors is an integer number (1599429).

Almost surely, 2^12549213 is an apocalyptic number.

It is an amenable number.

12549213 is a deficient number, since it is larger than the sum of its proper divisors (6643935).

12549213 is a wasteful number, since it uses less digits than its factorization.

12549213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82044 (or 82041 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 12549213 is about 3542.4868383665. The cubic root of 12549213 is about 232.3836115346.

The spelling of 12549213 in words is "twelve million, five hundred forty-nine thousand, two hundred thirteen".