533521 has 4 divisors (see below), whose sum is σ = 541552. Its totient is φ = 525492.

The previous prime is 533509. The next prime is 533543. The reversal of 533521 is 125335.

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 533521 - 2⁹ = 533009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (533581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3915 + ... + 4048.

It is an arithmetic number, because the mean of its divisors is an integer number (135388).

2⁵³³⁵²¹ is an apocalyptic number.

It is an amenable number.

533521 is a deficient number, since it is larger than the sum of its proper divisors (8031).

533521 is an equidigital number, since it uses as much as digits as its factorization.

533521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8030.

The product of its digits is 450, while the sum is 19.

The square root of 533521 is about 730.4252186227. The cubic root of 533521 is about 81.1055373803.

Adding to 533521 its reverse (125335), we get a palindrome (658856).

It can be divided in two parts, 5335 and 21, that added together give a triangular number (5356 = T₁₀₃).

The spelling of 533521 in words is "five hundred thirty-three thousand, five hundred twenty-one".