4220543 has 2 divisors, whose sum is σ = 4220544. Its totient is φ = 4220542.

The previous prime is 4220537. The next prime is 4220551. The reversal of 4220543 is 3450224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4220543 - 2⁸ = 4220287 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 (4220533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110271 + 2110272.

It is an arithmetic number, because the mean of its divisors is an integer number (2110272).

Almost surely, 2^4220543 is an apocalyptic number.

4220543 is a deficient number, since it is larger than the sum of its proper divisors (1).

4220543 is an equidigital number, since it uses as much as digits as its factorization.

4220543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 4220543 is about 2054.3960182983. The cubic root of 4220543 is about 161.6054897777.

Adding to 4220543 its reverse (3450224), we get a palindrome (7670767).

The spelling of 4220543 in words is "four million, two hundred twenty thousand, five hundred forty-three".