12272551 has 2 divisors, whose sum is σ = 12272552. Its totient is φ = 12272550.

The previous prime is 12272549. The next prime is 12272581. The reversal of 12272551 is 15527221.

It is a weak prime.

It is an emirp because it is prime and its reverse (15527221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12272551 - 2¹ = 12272549 is a prime.

Together with 12272549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12272581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6136275 + 6136276.

It is an arithmetic number, because the mean of its divisors is an integer number (6136276).

Almost surely, 2^12272551 is an apocalyptic number.

12272551 is a deficient number, since it is larger than the sum of its proper divisors (1).

12272551 is an equidigital number, since it uses as much as digits as its factorization.

12272551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1400, while the sum is 25.

The square root of 12272551 is about 3503.2200901456. The cubic root of 12272551 is about 230.6631836024.

Adding to 12272551 its reverse (15527221), we get a palindrome (27799772).

The spelling of 12272551 in words is "twelve million, two hundred seventy-two thousand, five hundred fifty-one".