32921 has 4 divisors (see below), whose sum is σ = 37632. Its totient is φ = 28212.

The previous prime is 32917. The next prime is 32933. The reversal of 32921 is 12923.

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 32921 - 2² = 32917 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 32921.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 32921.

It is not an unprimeable number, because it can be changed into a prime (32911) 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, 2345 + ... + 2358.

It is an arithmetic number, because the mean of its divisors is an integer number (9408).

2³²⁹²¹ is an apocalyptic number.

It is an amenable number.

32921 is a deficient number, since it is larger than the sum of its proper divisors (4711).

32921 is an equidigital number, since it uses as much as digits as its factorization.

32921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4710.

The product of its digits is 108, while the sum is 17.

The square root of 32921 is about 181.4414506115. The cubic root of 32921 is about 32.0497273721.

The spelling of 32921 in words is "thirty-two thousand, nine hundred twenty-one".