12627521 has 2 divisors, whose sum is σ = 12627522. Its totient is φ = 12627520.

The previous prime is 12627497. The next prime is 12627539. The reversal of 12627521 is 12572621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11316496 + 1311025 = 3364^2 + 1145^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12627521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12627581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6313760 + 6313761.

It is an arithmetic number, because the mean of its divisors is an integer number (6313761).

Almost surely, 2^12627521 is an apocalyptic number.

It is an amenable number.

12627521 is a deficient number, since it is larger than the sum of its proper divisors (1).

12627521 is an equidigital number, since it uses as much as digits as its factorization.

12627521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 26.

The square root of 12627521 is about 3553.5223370622. The cubic root of 12627521 is about 232.8659731322.

The spelling of 12627521 in words is "twelve million, six hundred twenty-seven thousand, five hundred twenty-one".