12775547 has 2 divisors, whose sum is σ = 12775548. Its totient is φ = 12775546.

The previous prime is 12775537. The next prime is 12775549. The reversal of 12775547 is 74557721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12775547 - 2¹⁰ = 12774523 is a prime.

It is a super-2 number, since 2×12775547² = 326429202298418, which contains 22 as substring.

Together with 12775549, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12775547.

It is not a weakly prime, because it can be changed into another prime (12775549) 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, 6387773 + 6387774.

It is an arithmetic number, because the mean of its divisors is an integer number (6387774).

Almost surely, 2^12775547 is an apocalyptic number.

12775547 is a deficient number, since it is larger than the sum of its proper divisors (1).

12775547 is an equidigital number, since it uses as much as digits as its factorization.

12775547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68600, while the sum is 38.

The square root of 12775547 is about 3574.2897196506. The cubic root of 12775547 is about 233.7723636700.

The spelling of 12775547 in words is "twelve million, seven hundred seventy-five thousand, five hundred forty-seven".