20055043 has 4 divisors (see below), whose sum is σ = 20354440. Its totient is φ = 19755648.

The previous prime is 20055017. The next prime is 20055083. The reversal of 20055043 is 34055002.

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 20055043 - 2¹⁷ = 19923971 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 20055043.

It is not an unprimeable number, because it can be changed into a prime (20055083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149598 + ... + 149731.

It is an arithmetic number, because the mean of its divisors is an integer number (5088610).

Almost surely, 2^20055043 is an apocalyptic number.

20055043 is a deficient number, since it is larger than the sum of its proper divisors (299397).

20055043 is an equidigital number, since it uses as much as digits as its factorization.

20055043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299396.

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

The square root of 20055043 is about 4478.2857211214. The cubic root of 20055043 is about 271.6905497130.

The spelling of 20055043 in words is "twenty million, fifty-five thousand, forty-three".