12551269 has 2 divisors, whose sum is σ = 12551270. Its totient is φ = 12551268.

The previous prime is 12551263. The next prime is 12551291. The reversal of 12551269 is 96215521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10956100 + 1595169 = 3310^2 + 1263^2 .

It is an emirp because it is prime and its reverse (96215521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12551269 - 2⁹ = 12550757 is a prime.

It is a super-2 number, since 2×12551269² = 315068707020722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12551269.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12551263) 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, 6275634 + 6275635.

It is an arithmetic number, because the mean of its divisors is an integer number (6275635).

Almost surely, 2^12551269 is an apocalyptic number.

It is an amenable number.

12551269 is a deficient number, since it is larger than the sum of its proper divisors (1).

12551269 is an equidigital number, since it uses as much as digits as its factorization.

12551269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 31.

The square root of 12551269 is about 3542.7770181032. Note that the first 3 decimals coincide. The cubic root of 12551269 is about 232.3963016960.

The spelling of 12551269 in words is "twelve million, five hundred fifty-one thousand, two hundred sixty-nine".