4821321 has 4 divisors (see below), whose sum is σ = 6428432. Its totient is φ = 3214212.

The previous prime is 4821317. The next prime is 4821331. The reversal of 4821321 is 1231284.

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 not a de Polignac number, because 4821321 - 2² = 4821317 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4821331) 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, 803551 + ... + 803556.

It is an arithmetic number, because the mean of its divisors is an integer number (1607108).

Almost surely, 2^4821321 is an apocalyptic number.

It is an amenable number.

4821321 is a deficient number, since it is larger than the sum of its proper divisors (1607111).

4821321 is a wasteful number, since it uses less digits than its factorization.

4821321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607110.

The product of its digits is 384, while the sum is 21.

The square root of 4821321 is about 2195.7506689057. The cubic root of 4821321 is about 168.9359256651.

The spelling of 4821321 in words is "four million, eight hundred twenty-one thousand, three hundred twenty-one".