20450033 has 2 divisors, whose sum is σ = 20450034. Its totient is φ = 20450032.

The previous prime is 20450009. The next prime is 20450041. The reversal of 20450033 is 33005402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13601344 + 6848689 = 3688^2 + 2617^2 .

It is a cyclic number.

It is not a de Polignac number, because 20450033 - 2⁶ = 20449969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20449993 and 20450020.

It is not a weakly prime, because it can be changed into another prime (20450063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10225016 + 10225017.

It is an arithmetic number, because the mean of its divisors is an integer number (10225017).

Almost surely, 2^20450033 is an apocalyptic number.

It is an amenable number.

20450033 is a deficient number, since it is larger than the sum of its proper divisors (1).

20450033 is an equidigital number, since it uses as much as digits as its factorization.

20450033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 20450033 is about 4522.1712705292. The cubic root of 20450033 is about 273.4626414086.

Adding to 20450033 its reverse (33005402), we get a palindrome (53455435).

The spelling of 20450033 in words is "twenty million, four hundred fifty thousand, thirty-three".