33855413 has 2 divisors, whose sum is σ = 33855414. Its totient is φ = 33855412.

The previous prime is 33855403. The next prime is 33855431. The reversal of 33855413 is 31455833.

Together with next prime (33855431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22819729 + 11035684 = 4777^2 + 3322^2 .

It is a cyclic number.

It is not a de Polignac number, because 33855413 - 2¹⁰ = 33854389 is a prime.

It is a super-2 number, since 2×33855413² = 2292377978801138, 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 33855413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33855403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16927706 + 16927707.

It is an arithmetic number, because the mean of its divisors is an integer number (16927707).

Almost surely, 2^33855413 is an apocalyptic number.

It is an amenable number.

33855413 is a deficient number, since it is larger than the sum of its proper divisors (1).

33855413 is an equidigital number, since it uses as much as digits as its factorization.

33855413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 32.

The square root of 33855413 is about 5818.5404527252. The cubic root of 33855413 is about 323.5013063052.

The spelling of 33855413 in words is "thirty-three million, eight hundred fifty-five thousand, four hundred thirteen".