33855013 has 2 divisors, whose sum is σ = 33855014. Its totient is φ = 33855012.

The previous prime is 33854987. The next prime is 33855077. The reversal of 33855013 is 31055833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31550689 + 2304324 = 5617^2 + 1518^2 .

It is an emirp because it is prime and its reverse (31055833) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33855013 - 2⁵ = 33854981 is a prime.

It is a super-2 number, since 2×33855013² = 2292323810460338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33855083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16927506 + 16927507.

It is an arithmetic number, because the mean of its divisors is an integer number (16927507).

Almost surely, 2^33855013 is an apocalyptic number.

It is an amenable number.

33855013 is a deficient number, since it is larger than the sum of its proper divisors (1).

33855013 is an equidigital number, since it uses as much as digits as its factorization.

33855013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 33855013 is about 5818.5060797425. The cubic root of 33855013 is about 323.5000322497.

The spelling of 33855013 in words is "thirty-three million, eight hundred fifty-five thousand, thirteen".