33053021 has 2 divisors, whose sum is σ = 33053022. Its totient is φ = 33053020.

The previous prime is 33053017. The next prime is 33053023. The reversal of 33053021 is 12035033.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32649796 + 403225 = 5714^2 + 635^2 .

It is an emirp because it is prime and its reverse (12035033) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33053021 - 2² = 33053017 is a prime.

Together with 33053023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33053023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16526510 + 16526511.

It is an arithmetic number, because the mean of its divisors is an integer number (16526511).

Almost surely, 2^33053021 is an apocalyptic number.

It is an amenable number.

33053021 is a deficient number, since it is larger than the sum of its proper divisors (1).

33053021 is an equidigital number, since it uses as much as digits as its factorization.

33053021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 33053021 is about 5749.1756800432. The cubic root of 33053021 is about 320.9251256027.

Adding to 33053021 its reverse (12035033), we get a palindrome (45088054).

The spelling of 33053021 in words is "thirty-three million, fifty-three thousand, twenty-one".