12551437 has 2 divisors, whose sum is σ = 12551438. Its totient is φ = 12551436.

The previous prime is 12551417. The next prime is 12551443. The reversal of 12551437 is 73415521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11964681 + 586756 = 3459^2 + 766^2 .

It is an emirp because it is prime and its reverse (73415521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12551437 - 2¹⁵ = 12518669 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 (12551417) 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, 6275718 + 6275719.

It is an arithmetic number, because the mean of its divisors is an integer number (6275719).

Almost surely, 2^12551437 is an apocalyptic number.

It is an amenable number.

12551437 is a deficient number, since it is larger than the sum of its proper divisors (1).

12551437 is an equidigital number, since it uses as much as digits as its factorization.

12551437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 28.

The square root of 12551437 is about 3542.8007282375. The cubic root of 12551437 is about 232.3973385740.

Adding to 12551437 its reverse (73415521), we get a palindrome (85966958).

The spelling of 12551437 in words is "twelve million, five hundred fifty-one thousand, four hundred thirty-seven".