532821 has 8 divisors (see below), whose sum is σ = 718144. Its totient is φ = 351360.

The previous prime is 532811. The next prime is 532823. The reversal of 532821 is 128235.

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

It is not a de Polignac number, because 532821 - 2⁵ = 532789 is a prime.

It is a Duffinian number.

It is a Curzon number.

532821 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (532823) 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 7 ways as a sum of consecutive naturals, for example, 625 + ... + 1206.

It is an arithmetic number, because the mean of its divisors is an integer number (89768).

2⁵³²⁸²¹ is an apocalyptic number.

It is an amenable number.

532821 is a deficient number, since it is larger than the sum of its proper divisors (185323).

532821 is a wasteful number, since it uses less digits than its factorization.

532821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931.

The product of its digits is 480, while the sum is 21.

The square root of 532821 is about 729.9458884054. The cubic root of 532821 is about 81.0700506646.

The spelling of 532821 in words is "five hundred thirty-two thousand, eight hundred twenty-one".