23220543 has 8 divisors (see below), whose sum is σ = 31067568. Its totient is φ = 15426944.

The previous prime is 23220529. The next prime is 23220551. The reversal of 23220543 is 34502232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23220543 - 2⁸ = 23220287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23220563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12330 + ... + 14087.

It is an arithmetic number, because the mean of its divisors is an integer number (3883446).

Almost surely, 2^23220543 is an apocalyptic number.

23220543 is a deficient number, since it is larger than the sum of its proper divisors (7847025).

23220543 is a wasteful number, since it uses less digits than its factorization.

23220543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26713.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 23220543 is about 4818.7698637723. The cubic root of 23220543 is about 285.2927862156.

Adding to 23220543 its reverse (34502232), we get a palindrome (57722775).

The spelling of 23220543 in words is "twenty-three million, two hundred twenty thousand, five hundred forty-three".