12551447 has 2 divisors, whose sum is σ = 12551448. Its totient is φ = 12551446.

The previous prime is 12551443. The next prime is 12551479. The reversal of 12551447 is 74415521.

12551447 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12551447 - 2² = 12551443 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12551443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6275723 + 6275724.

It is an arithmetic number, because the mean of its divisors is an integer number (6275724).

Almost surely, 2^12551447 is an apocalyptic number.

12551447 is a deficient number, since it is larger than the sum of its proper divisors (1).

12551447 is an equidigital number, since it uses as much as digits as its factorization.

12551447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5600, while the sum is 29.

The square root of 12551447 is about 3542.8021395500. The cubic root of 12551447 is about 232.3974002926.

Adding to 12551447 its reverse (74415521), we get a palindrome (86966968).

The spelling of 12551447 in words is "twelve million, five hundred fifty-one thousand, four hundred forty-seven".