20441573 has 2 divisors, whose sum is σ = 20441574. Its totient is φ = 20441572.

The previous prime is 20441563. The next prime is 20441591. The reversal of 20441573 is 37514402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11303044 + 9138529 = 3362^2 + 3023^2 .

It is a cyclic number.

It is not a de Polignac number, because 20441573 - 2¹⁰ = 20440549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20441563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10220786 + 10220787.

It is an arithmetic number, because the mean of its divisors is an integer number (10220787).

Almost surely, 2^20441573 is an apocalyptic number.

It is an amenable number.

20441573 is a deficient number, since it is larger than the sum of its proper divisors (1).

20441573 is an equidigital number, since it uses as much as digits as its factorization.

20441573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 20441573 is about 4521.2357823940. The cubic root of 20441573 is about 273.4249265054.

Adding to 20441573 its reverse (37514402), we get a palindrome (57955975).

The spelling of 20441573 in words is "twenty million, four hundred forty-one thousand, five hundred seventy-three".