6224321 has 4 divisors (see below), whose sum is σ = 6269892. Its totient is φ = 6178752.

The previous prime is 6224287. The next prime is 6224353. The reversal of 6224321 is 1234226.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5340721 + 883600 = 2311^2 + 940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6224321 is a prime.

It is a super-2 number, since 2×6224321² = 77484343822082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6224293 and 6224302.

It is not an unprimeable number, because it can be changed into a prime (6224221) 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, 22580 + ... + 22853.

It is an arithmetic number, because the mean of its divisors is an integer number (1567473).

Almost surely, 2^6224321 is an apocalyptic number.

It is an amenable number.

6224321 is a deficient number, since it is larger than the sum of its proper divisors (45571).

6224321 is a wasteful number, since it uses less digits than its factorization.

6224321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45570.

The product of its digits is 576, while the sum is 20.

The square root of 6224321 is about 2494.8589138466. The cubic root of 6224321 is about 183.9489559891.

Adding to 6224321 its reverse (1234226), we get a palindrome (7458547).

The spelling of 6224321 in words is "six million, two hundred twenty-four thousand, three hundred twenty-one".