43533 has 12 divisors (see below), whose sum is σ = 71968. Its totient is φ = 24840.

The previous prime is 43517. The next prime is 43541. The reversal of 43533 is 33534.

It is a happy number.

It is not a de Polignac number, because 43533 - 2⁴ = 43517 is a prime.

It is a Duffinian number.

43533 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 283 + ... + 408.

2⁴³⁵³³ is an apocalyptic number.

It is an amenable number.

43533 is a deficient number, since it is larger than the sum of its proper divisors (28435).

43533 is a wasteful number, since it uses less digits than its factorization.

43533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704 (or 701 counting only the distinct ones).

The product of its digits is 540, while the sum is 18.

The square root of 43533 is about 208.6456325927. The cubic root of 43533 is about 35.1781394052.

Subtracting from 43533 its reverse (33534), we obtain a palindrome (9999).

It can be divided in two parts, 4353 and 3, that added together give a square (4356 = 66²).

The spelling of 43533 in words is "forty-three thousand, five hundred thirty-three".