12445552 has 20 divisors (see below), whose sum is σ = 27558256. Its totient is φ = 5333760.

The previous prime is 12445549. The next prime is 12445561. The reversal of 12445552 is 25554421.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 12445552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55449 + ... + 55672.

Almost surely, 2^12445552 is an apocalyptic number.

It is an amenable number.

12445552 is an abundant number, since it is smaller than the sum of its proper divisors (15112704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12445552 is a wasteful number, since it uses less digits than its factorization.

12445552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111136 (or 111130 counting only the distinct ones).

The product of its digits is 8000, while the sum is 28.

The square root of 12445552 is about 3527.8253925046. The cubic root of 12445552 is about 231.7419842634.

Adding to 12445552 its reverse (25554421), we get a palindrome (37999973).

The spelling of 12445552 in words is "twelve million, four hundred forty-five thousand, five hundred fifty-two".