223009543 has 2 divisors, whose sum is σ = 223009544. Its totient is φ = 223009542.

The previous prime is 223009529. The next prime is 223009547. The reversal of 223009543 is 345900322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 223009543 - 2⁵ = 223009511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223009547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111504771 + 111504772.

It is an arithmetic number, because the mean of its divisors is an integer number (111504772).

Almost surely, 2^223009543 is an apocalyptic number.

223009543 is a deficient number, since it is larger than the sum of its proper divisors (1).

223009543 is an equidigital number, since it uses as much as digits as its factorization.

223009543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 223009543 is about 14933.5040429231. The cubic root of 223009543 is about 606.4213495461.

Adding to 223009543 its reverse (345900322), we get a palindrome (568909865).

The spelling of 223009543 in words is "two hundred twenty-three million, nine thousand, five hundred forty-three".