33223541 has 12 divisors (see below), whose sum is σ = 36482148. Its totient is φ = 30236544.

The previous prime is 33223517. The next prime is 33223583. The reversal of 33223541 is 14532233.

It can be written as a sum of positive squares in 6 ways, for example, as 5080516 + 28143025 = 2254^2 + 5305^2 .

It is not a de Polignac number, because 33223541 - 2¹⁴ = 33207157 is a prime.

It is a super-2 number, since 2×33223541² = 2207607353157362, 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 (33223511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10991 + ... + 13683.

It is an arithmetic number, because the mean of its divisors is an integer number (3040179).

Almost surely, 2^33223541 is an apocalyptic number.

It is an amenable number.

33223541 is a deficient number, since it is larger than the sum of its proper divisors (3258607).

33223541 is a wasteful number, since it uses less digits than its factorization.

33223541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2792 (or 2779 counting only the distinct ones).

The product of its digits is 2160, while the sum is 23.

The square root of 33223541 is about 5763.9865544604. The cubic root of 33223541 is about 321.4760617708.

Adding to 33223541 its reverse (14532233), we get a palindrome (47755774).

The spelling of 33223541 in words is "thirty-three million, two hundred twenty-three thousand, five hundred forty-one".