1006543 has 2 divisors, whose sum is σ = 1006544. Its totient is φ = 1006542.

The previous prime is 1006531. The next prime is 1006547. The reversal of 1006543 is 3456001.

It is a strong prime.

It is an emirp because it is prime and its reverse (3456001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1006543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1006543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1006547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503271 + 503272.

It is an arithmetic number, because the mean of its divisors is an integer number (503272).

2^1006543 is an apocalyptic number.

1006543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1006543 is an equidigital number, since it uses as much as digits as its factorization.

1006543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1006543 is about 1003.2661660796. The cubic root of 1006543 is about 100.2176260455.

The spelling of 1006543 in words is "one million, six thousand, five hundred forty-three".