33275621 has 2 divisors, whose sum is σ = 33275622. Its totient is φ = 33275620.

The previous prime is 33275603. The next prime is 33275633. The reversal of 33275621 is 12657233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26061025 + 7214596 = 5105^2 + 2686^2 .

It is a cyclic number.

It is not a de Polignac number, because 33275621 - 2¹⁰ = 33274597 is a prime.

It is a super-2 number, since 2×33275621² = 2214533905871282, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33275521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16637810 + 16637811.

It is an arithmetic number, because the mean of its divisors is an integer number (16637811).

Almost surely, 2^33275621 is an apocalyptic number.

It is an amenable number.

33275621 is a deficient number, since it is larger than the sum of its proper divisors (1).

33275621 is an equidigital number, since it uses as much as digits as its factorization.

33275621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 29.

The square root of 33275621 is about 5768.5024919818. The cubic root of 33275621 is about 321.6439520891.

The spelling of 33275621 in words is "thirty-three million, two hundred seventy-five thousand, six hundred twenty-one".