33220541 has 4 divisors (see below), whose sum is σ = 33424512. Its totient is φ = 33016572.

The previous prime is 33220519. The next prime is 33220549. The reversal of 33220541 is 14502233.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33220541 - 2¹⁸ = 32958397 is a prime.

It is a super-2 number, since 2×33220541² = 2207208688665362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33220549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101741 + ... + 102066.

It is an arithmetic number, because the mean of its divisors is an integer number (8356128).

Almost surely, 2^33220541 is an apocalyptic number.

It is an amenable number.

33220541 is a deficient number, since it is larger than the sum of its proper divisors (203971).

33220541 is a wasteful number, since it uses less digits than its factorization.

33220541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203970.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 33220541 is about 5763.7263120311. The cubic root of 33220541 is about 321.4663853267.

Adding to 33220541 its reverse (14502233), we get a palindrome (47722774).

The spelling of 33220541 in words is "thirty-three million, two hundred twenty thousand, five hundred forty-one".