223420543 has 2 divisors, whose sum is σ = 223420544. Its totient is φ = 223420542.

The previous prime is 223420537. The next prime is 223420567. The reversal of 223420543 is 345024322.

223420543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223420543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223420523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111710271 + 111710272.

It is an arithmetic number, because the mean of its divisors is an integer number (111710272).

Almost surely, 2^223420543 is an apocalyptic number.

223420543 is a deficient number, since it is larger than the sum of its proper divisors (1).

223420543 is an equidigital number, since it uses as much as digits as its factorization.

223420543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 223420543 is about 14947.2587118843. The cubic root of 223420543 is about 606.7936597986.

Adding to 223420543 its reverse (345024322), we get a palindrome (568444865).

The spelling of 223420543 in words is "two hundred twenty-three million, four hundred twenty thousand, five hundred forty-three".