12651437 has 2 divisors, whose sum is σ = 12651438. Its totient is φ = 12651436.

The previous prime is 12651433. The next prime is 12651467. The reversal of 12651437 is 73415621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8444836 + 4206601 = 2906^2 + 2051^2 .

It is a cyclic number.

It is not a de Polignac number, because 12651437 - 2² = 12651433 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 (12651433) 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 as a sum of consecutive naturals, namely, 6325718 + 6325719.

It is an arithmetic number, because the mean of its divisors is an integer number (6325719).

Almost surely, 2^12651437 is an apocalyptic number.

It is an amenable number.

12651437 is a deficient number, since it is larger than the sum of its proper divisors (1).

12651437 is an equidigital number, since it uses as much as digits as its factorization.

12651437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 29.

The square root of 12651437 is about 3556.8858570384. The cubic root of 12651437 is about 233.0128932429.

The spelling of 12651437 in words is "twelve million, six hundred fifty-one thousand, four hundred thirty-seven".