33997855 has 16 divisors (see below), whose sum is σ = 42294528. Its totient is φ = 26208000.

The previous prime is 33997849. The next prime is 33997867. The reversal of 33997855 is 55879933.

It is not a de Polignac number, because 33997855 - 2⁹ = 33997343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33997799 and 33997808.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 64995 + ... + 65515.

It is an arithmetic number, because the mean of its divisors is an integer number (2643408).

Almost surely, 2^33997855 is an apocalyptic number.

33997855 is a deficient number, since it is larger than the sum of its proper divisors (8296673).

33997855 is a wasteful number, since it uses less digits than its factorization.

33997855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978.

The product of its digits is 1020600, while the sum is 49.

The square root of 33997855 is about 5830.7679597117. The cubic root of 33997855 is about 323.9543672714.

The spelling of 33997855 in words is "thirty-three million, nine hundred ninety-seven thousand, eight hundred fifty-five".