4722321 has 4 divisors (see below), whose sum is σ = 6296432. Its totient is φ = 3148212.

The previous prime is 4722313. The next prime is 4722343. The reversal of 4722321 is 1232274.

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 4722321 - 2³ = 4722313 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

4722321 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4722371) 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, 787051 + ... + 787056.

It is an arithmetic number, because the mean of its divisors is an integer number (1574108).

Almost surely, 2^4722321 is an apocalyptic number.

It is an amenable number.

4722321 is a deficient number, since it is larger than the sum of its proper divisors (1574111).

4722321 is a wasteful number, since it uses less digits than its factorization.

4722321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574110.

The product of its digits is 672, while the sum is 21.

The square root of 4722321 is about 2173.0901960112. The cubic root of 4722321 is about 167.7716213729.

Adding to 4722321 its reverse (1232274), we get a palindrome (5954595).

The spelling of 4722321 in words is "four million, seven hundred twenty-two thousand, three hundred twenty-one".