6545543 has 2 divisors, whose sum is σ = 6545544. Its totient is φ = 6545542.

The previous prime is 6545537. The next prime is 6545563. The reversal of 6545543 is 3455456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6545543 - 2¹⁸ = 6283399 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6545563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3272771 + 3272772.

It is an arithmetic number, because the mean of its divisors is an integer number (3272772).

Almost surely, 2^6545543 is an apocalyptic number.

6545543 is a deficient number, since it is larger than the sum of its proper divisors (1).

6545543 is an equidigital number, since it uses as much as digits as its factorization.

6545543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36000, while the sum is 32.

The square root of 6545543 is about 2558.4258832337. The cubic root of 6545543 is about 187.0604149594.

The spelling of 6545543 in words is "six million, five hundred forty-five thousand, five hundred forty-three".