33765139 has 2 divisors, whose sum is σ = 33765140. Its totient is φ = 33765138.

The previous prime is 33765133. The next prime is 33765143. The reversal of 33765139 is 93156733.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33765139 is a prime.

It is a super-2 number, since 2×33765139² = 2280169223378642, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 33765098 and 33765107.

It is not a weakly prime, because it can be changed into another prime (33765133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16882569 + 16882570.

It is an arithmetic number, because the mean of its divisors is an integer number (16882570).

Almost surely, 2^33765139 is an apocalyptic number.

33765139 is a deficient number, since it is larger than the sum of its proper divisors (1).

33765139 is an equidigital number, since it uses as much as digits as its factorization.

33765139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51030, while the sum is 37.

The square root of 33765139 is about 5810.7778308932. Note that the first 3 decimals coincide. The cubic root of 33765139 is about 323.2135162621.

It can be divided in two parts, 3376 and 5139, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 33765139 in words is "thirty-three million, seven hundred sixty-five thousand, one hundred thirty-nine".