12552220 has 12 divisors (see below), whose sum is σ = 26359704. Its totient is φ = 5020880.

The previous prime is 12552209. The next prime is 12552223. The reversal of 12552220 is 2225521.

12552220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12552223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313786 + ... + 313825.

It is an arithmetic number, because the mean of its divisors is an integer number (2196642).

Almost surely, 2^12552220 is an apocalyptic number.

12552220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12552220 is an abundant number, since it is smaller than the sum of its proper divisors (13807484).

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

12552220 is a wasteful number, since it uses less digits than its factorization.

12552220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627620 (or 627618 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 12552220 is about 3542.9112323060. The cubic root of 12552220 is about 232.4021710441.

Adding to 12552220 its reverse (2225521), we get a palindrome (14777741).

The spelling of 12552220 in words is "twelve million, five hundred fifty-two thousand, two hundred twenty".