20441553 has 16 divisors (see below), whose sum is σ = 30240000. Its totient is φ = 12177680.

The previous prime is 20441471. The next prime is 20441563. The reversal of 20441553 is 35514402.

It is a cyclic number.

It is not a de Polignac number, because 20441553 - 2¹² = 20437457 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20441563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3303 + ... + 7196.

It is an arithmetic number, because the mean of its divisors is an integer number (1890000).

Almost surely, 2^20441553 is an apocalyptic number.

It is an amenable number.

20441553 is a deficient number, since it is larger than the sum of its proper divisors (9798447).

20441553 is a wasteful number, since it uses less digits than its factorization.

20441553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10572.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 20441553 is about 4521.2335706088. The cubic root of 20441553 is about 273.4248373325.

Adding to 20441553 its reverse (35514402), we get a palindrome (55955955).

The spelling of 20441553 in words is "twenty million, four hundred forty-one thousand, five hundred fifty-three".