33050921 has 2 divisors, whose sum is σ = 33050922. Its totient is φ = 33050920.

The previous prime is 33050893. The next prime is 33050957. The reversal of 33050921 is 12905033.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31584400 + 1466521 = 5620^2 + 1211^2 .

It is a cyclic number.

It is not a de Polignac number, because 33050921 - 2¹⁰ = 33049897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (33050021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16525460 + 16525461.

It is an arithmetic number, because the mean of its divisors is an integer number (16525461).

Almost surely, 2^33050921 is an apocalyptic number.

It is an amenable number.

33050921 is a deficient number, since it is larger than the sum of its proper divisors (1).

33050921 is an equidigital number, since it uses as much as digits as its factorization.

33050921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 33050921 is about 5748.9930422640. The cubic root of 33050921 is about 320.9183288761.

Adding to 33050921 its reverse (12905033), we get a palindrome (45955954).

The spelling of 33050921 in words is "thirty-three million, fifty thousand, nine hundred twenty-one".