20041573 has 2 divisors, whose sum is σ = 20041574. Its totient is φ = 20041572.

The previous prime is 20041537. The next prime is 20041577. The reversal of 20041573 is 37514002.

Together with previous prime (20041537) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18679684 + 1361889 = 4322^2 + 1167^2 .

It is a cyclic number.

It is not a de Polignac number, because 20041573 - 2¹³ = 20033381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20041577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10020786 + 10020787.

It is an arithmetic number, because the mean of its divisors is an integer number (10020787).

Almost surely, 2^20041573 is an apocalyptic number.

It is an amenable number.

20041573 is a deficient number, since it is larger than the sum of its proper divisors (1).

20041573 is an equidigital number, since it uses as much as digits as its factorization.

20041573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 20041573 is about 4476.7815448154. The cubic root of 20041573 is about 271.6297089667.

Adding to 20041573 its reverse (37514002), we get a palindrome (57555575).

The spelling of 20041573 in words is "twenty million, forty-one thousand, five hundred seventy-three".