12555547 has 2 divisors, whose sum is σ = 12555548. Its totient is φ = 12555546.

The previous prime is 12555511. The next prime is 12555551. The reversal of 12555547 is 74555521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12555547 - 2¹⁵ = 12522779 is a prime.

It is not a weakly prime, because it can be changed into another prime (12555577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6277773 + 6277774.

It is an arithmetic number, because the mean of its divisors is an integer number (6277774).

Almost surely, 2^12555547 is an apocalyptic number.

12555547 is a deficient number, since it is larger than the sum of its proper divisors (1).

12555547 is an equidigital number, since it uses as much as digits as its factorization.

12555547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35000, while the sum is 34.

The square root of 12555547 is about 3543.3807303196. The cubic root of 12555547 is about 232.4227021725.

It can be divided in two parts, 1255554 and 7, that multiplied together give a palindrome (8788878).

The spelling of 12555547 in words is "twelve million, five hundred fifty-five thousand, five hundred forty-seven".