12153556 has 6 divisors (see below), whose sum is σ = 21268730. Its totient is φ = 6076776.

The previous prime is 12153553. The next prime is 12153571. The reversal of 12153556 is 65535121.

It can be written as a sum of positive squares in only one way, i.e., 10784656 + 1368900 = 3284^2 + 1170^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12153553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1519191 + ... + 1519198.

Almost surely, 2^12153556 is an apocalyptic number.

It is an amenable number.

12153556 is a deficient number, since it is larger than the sum of its proper divisors (9115174).

12153556 is a wasteful number, since it uses less digits than its factorization.

12153556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3038393 (or 3038391 counting only the distinct ones).

The product of its digits is 4500, while the sum is 28.

The square root of 12153556 is about 3486.1950605209. The cubic root of 12153556 is about 229.9152554838.

Adding to 12153556 its reverse (65535121), we get a palindrome (77688677).

The spelling of 12153556 in words is "twelve million, one hundred fifty-three thousand, five hundred fifty-six".