30533 has 4 divisors (see below), whose sum is σ = 32160. Its totient is φ = 28908.

The previous prime is 30529. The next prime is 30539. The reversal of 30533 is 33503.

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 30533 - 2² = 30529 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 785 + ... + 822.

It is an arithmetic number, because the mean of its divisors is an integer number (8040).

2³⁰⁵³³ is an apocalyptic number.

It is an amenable number.

30533 is a deficient number, since it is larger than the sum of its proper divisors (1627).

30533 is a wasteful number, since it uses less digits than its factorization.

30533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626.

The product of its (nonzero) digits is 135, while the sum is 14.

The square root of 30533 is about 174.7369451490. The cubic root of 30533 is about 31.2552631135.

The spelling of 30533 in words is "thirty thousand, five hundred thirty-three".