33055139 has 4 divisors (see below), whose sum is σ = 35597856. Its totient is φ = 30512424.

The previous prime is 33055133. The next prime is 33055153. The reversal of 33055139 is 93155033.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33055139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33055133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1271339 + ... + 1271364.

It is an arithmetic number, because the mean of its divisors is an integer number (8899464).

Almost surely, 2^33055139 is an apocalyptic number.

33055139 is a deficient number, since it is larger than the sum of its proper divisors (2542717).

33055139 is a wasteful number, since it uses less digits than its factorization.

33055139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542716.

The product of its (nonzero) digits is 6075, while the sum is 29.

The square root of 33055139 is about 5749.3598774124. The cubic root of 33055139 is about 320.9319802953.

The spelling of 33055139 in words is "thirty-three million, fifty-five thousand, one hundred thirty-nine".