20005573 has 12 divisors (see below), whose sum is σ = 23556960. Its totient is φ = 16937592.

The previous prime is 20005541. The next prime is 20005589. The reversal of 20005573 is 37550002.

It is not a de Polignac number, because 20005573 - 2⁵ = 20005541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20005523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1608 + ... + 6526.

It is an arithmetic number, because the mean of its divisors is an integer number (1963080).

Almost surely, 2^20005573 is an apocalyptic number.

It is an amenable number.

20005573 is a deficient number, since it is larger than the sum of its proper divisors (3551387).

20005573 is an equidigital number, since it uses as much as digits as its factorization.

20005573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5016 (or 5009 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 22.

The square root of 20005573 is about 4472.7589919422. The cubic root of 20005573 is about 271.4669717337.

Adding to 20005573 its reverse (37550002), we get a palindrome (57555575).

The spelling of 20005573 in words is "twenty million, five thousand, five hundred seventy-three".