20055443 has 8 divisors (see below), whose sum is σ = 21308880. Its totient is φ = 18839520.

The previous prime is 20055433. The next prime is 20055463. The reversal of 20055443 is 34455002.

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 20055443 - 2⁸ = 20055187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20055403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8273 + ... + 10418.

It is an arithmetic number, because the mean of its divisors is an integer number (2663610).

Almost surely, 2^20055443 is an apocalyptic number.

20055443 is a deficient number, since it is larger than the sum of its proper divisors (1253437).

20055443 is a wasteful number, since it uses less digits than its factorization.

20055443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18757.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 20055443 is about 4478.3303808451. The cubic root of 20055443 is about 271.6923560001.

The spelling of 20055443 in words is "twenty million, fifty-five thousand, four hundred forty-three".