20173133 has 2 divisors, whose sum is σ = 20173134. Its totient is φ = 20173132.

The previous prime is 20173091. The next prime is 20173141. The reversal of 20173133 is 33137102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14730244 + 5442889 = 3838^2 + 2333^2 .

It is a cyclic number.

It is not a de Polignac number, because 20173133 - 2⁸ = 20172877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20173333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10086566 + 10086567.

It is an arithmetic number, because the mean of its divisors is an integer number (10086567).

Almost surely, 2^20173133 is an apocalyptic number.

It is an amenable number.

20173133 is a deficient number, since it is larger than the sum of its proper divisors (1).

20173133 is an equidigital number, since it uses as much as digits as its factorization.

20173133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 20173133 is about 4491.4511018155. The cubic root of 20173133 is about 272.2227711097. Note that the first 3 decimals are identical.

The spelling of 20173133 in words is "twenty million, one hundred seventy-three thousand, one hundred thirty-three".