20441585 has 4 divisors (see below), whose sum is σ = 24529908. Its totient is φ = 16353264.

The previous prime is 20441573. The next prime is 20441591. The reversal of 20441585 is 58514402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11175649 + 9265936 = 3343^2 + 3044^2 .

It is a cyclic number.

It is not a de Polignac number, because 20441585 - 2¹⁶ = 20376049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2044154 + ... + 2044163.

It is an arithmetic number, because the mean of its divisors is an integer number (6132477).

Almost surely, 2^20441585 is an apocalyptic number.

It is an amenable number.

20441585 is a deficient number, since it is larger than the sum of its proper divisors (4088323).

20441585 is an equidigital number, since it uses as much as digits as its factorization.

20441585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4088322.

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 20441585 is about 4521.2371094646. The cubic root of 20441585 is about 273.4249800091.

Adding to 20441585 its reverse (58514402), we get a palindrome (78955987).

The spelling of 20441585 in words is "twenty million, four hundred forty-one thousand, five hundred eighty-five".