33223145 has 8 divisors (see below), whose sum is σ = 39988104. Its totient is φ = 26498304.

The previous prime is 33223129. The next prime is 33223159. The reversal of 33223145 is 54132233.

It can be written as a sum of positive squares in 4 ways, for example, as 137641 + 33085504 = 371^2 + 5752^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33223145 - 2⁴ = 33223129 is a prime.

It is a super-2 number, since 2×33223145² = 2207554727382050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33223145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8174 + ... + 11543.

It is an arithmetic number, because the mean of its divisors is an integer number (4998513).

Almost surely, 2^33223145 is an apocalyptic number.

It is an amenable number.

33223145 is a deficient number, since it is larger than the sum of its proper divisors (6764959).

33223145 is a wasteful number, since it uses less digits than its factorization.

33223145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20059.

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

The square root of 33223145 is about 5763.9522031328. The cubic root of 33223145 is about 321.4747845136.

Adding to 33223145 its reverse (54132233), we get a palindrome (87355378).

The spelling of 33223145 in words is "thirty-three million, two hundred twenty-three thousand, one hundred forty-five".