8555543 has 2 divisors, whose sum is σ = 8555544. Its totient is φ = 8555542.

The previous prime is 8555507. The next prime is 8555549. The reversal of 8555543 is 3455558.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8555543 - 2¹² = 8551447 is a prime.

It is equal to p₅₇₄₆₄₉ and since 8555543 and 574649 have the same sum of digits, it is a Honaker prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8555549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4277771 + 4277772.

It is an arithmetic number, because the mean of its divisors is an integer number (4277772).

Almost surely, 2^8555543 is an apocalyptic number.

8555543 is a deficient number, since it is larger than the sum of its proper divisors (1).

8555543 is an equidigital number, since it uses as much as digits as its factorization.

8555543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60000, while the sum is 35.

The square root of 8555543 is about 2924.9859828724. The cubic root of 8555543 is about 204.5263146056.

The spelling of 8555543 in words is "eight million, five hundred fifty-five thousand, five hundred forty-three".