20053173 has 32 divisors (see below), whose sum is σ = 31522816. Its totient is φ = 11104128.

The previous prime is 20053153. The next prime is 20053211. The reversal of 20053173 is 37135002.

It is a happy number.

It is not a de Polignac number, because 20053173 - 2⁶ = 20053109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20053153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157836 + ... + 157962.

It is an arithmetic number, because the mean of its divisors is an integer number (985088).

Almost surely, 2^20053173 is an apocalyptic number.

It is an amenable number.

20053173 is a deficient number, since it is larger than the sum of its proper divisors (11469643).

20053173 is a wasteful number, since it uses less digits than its factorization.

20053173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 20053173 is about 4478.0769310051. The cubic root of 20053173 is about 271.6821050021.

Adding to 20053173 its reverse (37135002), we get a palindrome (57188175).

The spelling of 20053173 in words is "twenty million, fifty-three thousand, one hundred seventy-three".