52222321 has 4 divisors (see below), whose sum is σ = 53906944. Its totient is φ = 50537700.

The previous prime is 52222309. The next prime is 52222327. The reversal of 52222321 is 12322225.

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 52222321 - 2⁷ = 52222193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52222327) 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, 842265 + ... + 842326.

It is an arithmetic number, because the mean of its divisors is an integer number (13476736).

Almost surely, 2^52222321 is an apocalyptic number.

It is an amenable number.

52222321 is a deficient number, since it is larger than the sum of its proper divisors (1684623).

52222321 is a wasteful number, since it uses less digits than its factorization.

52222321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684622.

The product of its digits is 480, while the sum is 19.

The square root of 52222321 is about 7226.5012973084. The cubic root of 52222321 is about 373.7822924861.

Adding to 52222321 its reverse (12322225), we get a palindrome (64544546).

The spelling of 52222321 in words is "fifty-two million, two hundred twenty-two thousand, three hundred twenty-one".