33821045 has 16 divisors (see below), whose sum is σ = 42960000. Its totient is φ = 25489728.

The previous prime is 33821009. The next prime is 33821057. The reversal of 33821045 is 54012833.

It is a cyclic number.

It is not a de Polignac number, because 33821045 - 2⁸ = 33820789 is a prime.

It is a super-2 number, since 2×33821045² = 2287726169784050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18011 + ... + 19799.

It is an arithmetic number, because the mean of its divisors is an integer number (2685000).

Almost surely, 2^33821045 is an apocalyptic number.

It is an amenable number.

33821045 is a deficient number, since it is larger than the sum of its proper divisors (9138955).

33821045 is a wasteful number, since it uses less digits than its factorization.

33821045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 33821045 is about 5815.5863848799. The cubic root of 33821045 is about 323.3918028199.

Adding to 33821045 its reverse (54012833), we get a palindrome (87833878).

The spelling of 33821045 in words is "thirty-three million, eight hundred twenty-one thousand, forty-five".