33274981 has 2 divisors, whose sum is σ = 33274982. Its totient is φ = 33274980.

The previous prime is 33274973. The next prime is 33275027. The reversal of 33274981 is 18947233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33166081 + 108900 = 5759^2 + 330^2 .

It is a cyclic number.

It is not a de Polignac number, because 33274981 - 2³ = 33274973 is a prime.

It is a super-2 number, since 2×33274981² = 2214448721100722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33274981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33274081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16637490 + 16637491.

It is an arithmetic number, because the mean of its divisors is an integer number (16637491).

Almost surely, 2^33274981 is an apocalyptic number.

It is an amenable number.

33274981 is a deficient number, since it is larger than the sum of its proper divisors (1).

33274981 is an equidigital number, since it uses as much as digits as its factorization.

33274981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 33274981 is about 5768.4470180457. The cubic root of 33274981 is about 321.6418899843.

The spelling of 33274981 in words is "thirty-three million, two hundred seventy-four thousand, nine hundred eighty-one".