12251549 has 2 divisors, whose sum is σ = 12251550. Its totient is φ = 12251548.

The previous prime is 12251501. The next prime is 12251567. The reversal of 12251549 is 94515221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8323225 + 3928324 = 2885^2 + 1982^2 .

It is an emirp because it is prime and its reverse (94515221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12251549 - 2¹² = 12247453 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12251149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6125774 + 6125775.

It is an arithmetic number, because the mean of its divisors is an integer number (6125775).

Almost surely, 2^12251549 is an apocalyptic number.

It is an amenable number.

12251549 is a deficient number, since it is larger than the sum of its proper divisors (1).

12251549 is an equidigital number, since it uses as much as digits as its factorization.

12251549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 29.

The square root of 12251549 is about 3500.2212787194. The cubic root of 12251549 is about 230.5315306095.

The spelling of 12251549 in words is "twelve million, two hundred fifty-one thousand, five hundred forty-nine".