33145233 has 8 divisors (see below), whose sum is σ = 48211296. Its totient is φ = 20088000.

The previous prime is 33145219. The next prime is 33145247. The reversal of 33145233 is 33254133.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (33145219) and next prime (33145247).

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

It is not a de Polignac number, because 33145233 - 2⁵ = 33145201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (33145213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 502168 + ... + 502233.

It is an arithmetic number, because the mean of its divisors is an integer number (6026412).

Almost surely, 2^33145233 is an apocalyptic number.

33145233 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

33145233 is a deficient number, since it is larger than the sum of its proper divisors (15066063).

33145233 is a wasteful number, since it uses less digits than its factorization.

33145233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004415.

The product of its digits is 3240, while the sum is 24.

The square root of 33145233 is about 5757.1896790014. The cubic root of 33145233 is about 321.2232896787.

Adding to 33145233 its reverse (33254133), we get a palindrome (66399366).

Subtracting 33145233 from its reverse (33254133), we obtain a square (108900 = 330²).

The spelling of 33145233 in words is "thirty-three million, one hundred forty-five thousand, two hundred thirty-three".