6541247 has 2 divisors, whose sum is σ = 6541248. Its totient is φ = 6541246.

The previous prime is 6541229. The next prime is 6541253. The reversal of 6541247 is 7421456.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6541247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6549247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3270623 + 3270624.

It is an arithmetic number, because the mean of its divisors is an integer number (3270624).

Almost surely, 2^6541247 is an apocalyptic number.

6541247 is a deficient number, since it is larger than the sum of its proper divisors (1).

6541247 is an equidigital number, since it uses as much as digits as its factorization.

6541247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 29.

The square root of 6541247 is about 2557.5861666814. The cubic root of 6541247 is about 187.0194818941.

The spelling of 6541247 in words is "six million, five hundred forty-one thousand, two hundred forty-seven".