12551432 has 16 divisors (see below), whose sum is σ = 24345900. Its totient is φ = 6059200.

The previous prime is 12551417. The next prime is 12551437. The reversal of 12551432 is 23415521.

It can be written as a sum of positive squares in 2 ways, for example, as 12208036 + 343396 = 3494^2 + 586^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12551398 and 12551407.

It is not an unprimeable number, because it can be changed into a prime (12551437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26819 + ... + 27282.

Almost surely, 2^12551432 is an apocalyptic number.

It is an amenable number.

12551432 is a deficient number, since it is larger than the sum of its proper divisors (11794468).

12551432 is a wasteful number, since it uses less digits than its factorization.

12551432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54136 (or 54132 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 12551432 is about 3542.8000225810. The cubic root of 12551432 is about 232.3973077147.

Adding to 12551432 its reverse (23415521), we get a palindrome (35966953).

The spelling of 12551432 in words is "twelve million, five hundred fifty-one thousand, four hundred thirty-two".