12551433 has 8 divisors (see below), whose sum is σ = 16771296. Its totient is φ = 8349600.

The previous prime is 12551417. The next prime is 12551437. The reversal of 12551433 is 33415521.

12551433 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12551433 - 2⁴ = 12551417 is a prime.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2788 + ... + 5733.

It is an arithmetic number, because the mean of its divisors is an integer number (2096412).

Almost surely, 2^12551433 is an apocalyptic number.

It is an amenable number.

12551433 is a deficient number, since it is larger than the sum of its proper divisors (4219863).

12551433 is an equidigital number, since it uses as much as digits as its factorization.

12551433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9015.

The product of its digits is 1800, while the sum is 24.

The square root of 12551433 is about 3542.8001637123. The cubic root of 12551433 is about 232.3973138865.

Adding to 12551433 its reverse (33415521), we get a palindrome (45966954).

The spelling of 12551433 in words is "twelve million, five hundred fifty-one thousand, four hundred thirty-three".