20532133 has 2 divisors, whose sum is σ = 20532134. Its totient is φ = 20532132.

The previous prime is 20532121. The next prime is 20532139. The reversal of 20532133 is 33123502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18507204 + 2024929 = 4302^2 + 1423^2 .

It is a cyclic number.

It is not a de Polignac number, because 20532133 - 2⁵ = 20532101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20532133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20532139) 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, 10266066 + 10266067.

It is an arithmetic number, because the mean of its divisors is an integer number (10266067).

Almost surely, 2^20532133 is an apocalyptic number.

It is an amenable number.

20532133 is a deficient number, since it is larger than the sum of its proper divisors (1).

20532133 is an equidigital number, since it uses as much as digits as its factorization.

20532133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 20532133 is about 4531.2396758503. The cubic root of 20532133 is about 273.8281062615.

Adding to 20532133 its reverse (33123502), we get a palindrome (53655635).

It can be divided in two parts, 2053 and 2133, that added together give a triangular number (4186 = T₉₁).

The spelling of 20532133 in words is "twenty million, five hundred thirty-two thousand, one hundred thirty-three".