20543052 has 12 divisors (see below), whose sum is σ = 47933816. Its totient is φ = 6847680.

The previous prime is 20543051. The next prime is 20543063. The reversal of 20543052 is 25034502.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (20543051) 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, 855949 + ... + 855972.

Almost surely, 2^20543052 is an apocalyptic number.

It is an amenable number.

20543052 is an abundant number, since it is smaller than the sum of its proper divisors (27390764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20543052 is a wasteful number, since it uses less digits than its factorization.

20543052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711928 (or 1711926 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 20543052 is about 4532.4443736245. Note that the first 3 decimals coincide. The cubic root of 20543052 is about 273.8766383069.

Adding to 20543052 its reverse (25034502), we get a palindrome (45577554).

The spelling of 20543052 in words is "twenty million, five hundred forty-three thousand, fifty-two".