Search a number
12547 is a prime number

12547 has 2 divisors, whose sum is σ = 12548. Its totient is φ = 12546.

The previous prime is 12541. The next prime is 12553. The reversal of 12547 is 74521.

It can be divided in two parts, 1254 and 7, that multiplied together give a palindrome (8778).

12547 is nontrivially palindromic in base 8 and base 9.

It is a balanced prime because it is at equal distance from previous prime (12541) and next prime (12553).

It is an emirp because it is prime and its reverse (74521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12547 - 23 = 12539 is a prime.

It is an alternating number because its digits alternate between odd and even.

12547 is an undulating number in base 9.

12547 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (12541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6273 + 6274.

It is an arithmetic number, because the mean of its divisors is an integer number (6274).

212547 is an apocalyptic number.

12547 is a deficient number, since it is larger than the sum of its proper divisors (1).

12547 is an equidigital number, since it uses as much as digits as its factorization.

12547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 280, while the sum is 19.

The square root of 12547 is about 112.0133920565. The cubic root of 12547 is about 23.2369950780.

The spelling of 12547 in words is "twelve thousand, five hundred forty-seven".