23528543 has 4 divisors (see below), whose sum is σ = 23586480. Its totient is φ = 23470608.

The previous prime is 23528539. The next prime is 23528569. The reversal of 23528543 is 34582532.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23528543 - 2² = 23528539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23528513) 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 3 ways as a sum of consecutive naturals, for example, 28355 + ... + 29172.

It is an arithmetic number, because the mean of its divisors is an integer number (5896620).

Almost surely, 2^23528543 is an apocalyptic number.

23528543 is a deficient number, since it is larger than the sum of its proper divisors (57937).

23528543 is an equidigital number, since it uses as much as digits as its factorization.

23528543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57936.

The product of its digits is 28800, while the sum is 32.

The square root of 23528543 is about 4850.6229496839. The cubic root of 23528543 is about 286.5486355325.

The spelling of 23528543 in words is "twenty-three million, five hundred twenty-eight thousand, five hundred forty-three".