8220543 has 16 divisors (see below), whose sum is σ = 11532000. Its totient is φ = 5201280.

The previous prime is 8220523. The next prime is 8220551. The reversal of 8220543 is 3450228.

It is not a de Polignac number, because 8220543 - 2⁸ = 8220287 is a prime.

8220543 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8220523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4533 + ... + 6081.

It is an arithmetic number, because the mean of its divisors is an integer number (720750).

Almost surely, 2^8220543 is an apocalyptic number.

8220543 is a deficient number, since it is larger than the sum of its proper divisors (3311457).

8220543 is a wasteful number, since it uses less digits than its factorization.

8220543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 8220543 is about 2867.1489323019. The cubic root of 8220543 is about 201.8212237148.

The spelling of 8220543 in words is "eight million, two hundred twenty thousand, five hundred forty-three".