20563041 has 4 divisors (see below), whose sum is σ = 27417392. Its totient is φ = 13708692.

The previous prime is 20563027. The next prime is 20563069. The reversal of 20563041 is 14036502.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20563041 - 2⁶ = 20562977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20562999 and 20563017.

It is not an unprimeable number, because it can be changed into a prime (20563021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3427171 + ... + 3427176.

It is an arithmetic number, because the mean of its divisors is an integer number (6854348).

Almost surely, 2^20563041 is an apocalyptic number.

It is an amenable number.

20563041 is a deficient number, since it is larger than the sum of its proper divisors (6854351).

20563041 is an equidigital number, since it uses as much as digits as its factorization.

20563041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6854350.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 20563041 is about 4534.6489390029. The cubic root of 20563041 is about 273.9654395467.

Adding to 20563041 its reverse (14036502), we get a palindrome (34599543).

The spelling of 20563041 in words is "twenty million, five hundred sixty-three thousand, forty-one".