20050543 has 4 divisors (see below), whose sum is σ = 20275920. Its totient is φ = 19825168.

The previous prime is 20050523. The next prime is 20050561. The reversal of 20050543 is 34505002.

It is a happy number.

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 20050543 - 2⁹ = 20050031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20050543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20050523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112555 + ... + 112732.

It is an arithmetic number, because the mean of its divisors is an integer number (5068980).

Almost surely, 2^20050543 is an apocalyptic number.

20050543 is a deficient number, since it is larger than the sum of its proper divisors (225377).

20050543 is an equidigital number, since it uses as much as digits as its factorization.

20050543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225376.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 20050543 is about 4477.7832685381. The cubic root of 20050543 is about 271.6702273278.

Adding to 20050543 its reverse (34505002), we get a palindrome (54555545).

The spelling of 20050543 in words is "twenty million, fifty thousand, five hundred forty-three".