20641053 has 8 divisors (see below), whose sum is σ = 27564768. Its totient is φ = 13739024.

The previous prime is 20641039. The next prime is 20641057. The reversal of 20641053 is 35014602.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20641053 - 2⁹ = 20640541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20641057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3051 + ... + 7112.

It is an arithmetic number, because the mean of its divisors is an integer number (3445596).

Almost surely, 2^20641053 is an apocalyptic number.

It is an amenable number.

20641053 is a deficient number, since it is larger than the sum of its proper divisors (6923715).

20641053 is a wasteful number, since it uses less digits than its factorization.

20641053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10843.

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

The square root of 20641053 is about 4543.2425645127. The cubic root of 20641053 is about 274.3114587458.

Adding to 20641053 its reverse (35014602), we get a palindrome (55655655).

The spelling of 20641053 in words is "twenty million, six hundred forty-one thousand, fifty-three".