33144649 has 2 divisors, whose sum is σ = 33144650. Its totient is φ = 33144648.

The previous prime is 33144613. The next prime is 33144653. The reversal of 33144649 is 94644133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33143049 + 1600 = 5757^2 + 40^2 .

It is a cyclic number.

It is not a de Polignac number, because 33144649 - 2⁷ = 33144521 is a prime.

It is not a weakly prime, because it can be changed into another prime (33148649) 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, 16572324 + 16572325.

It is an arithmetic number, because the mean of its divisors is an integer number (16572325).

Almost surely, 2^33144649 is an apocalyptic number.

It is an amenable number.

33144649 is a deficient number, since it is larger than the sum of its proper divisors (1).

33144649 is an equidigital number, since it uses as much as digits as its factorization.

33144649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 34.

The square root of 33144649 is about 5757.1389595875. The cubic root of 33144649 is about 321.2214030775.

The spelling of 33144649 in words is "thirty-three million, one hundred forty-four thousand, six hundred forty-nine".