52231222 has 4 divisors (see below), whose sum is σ = 78346836. Its totient is φ = 26115610.

The previous prime is 52231219. The next prime is 52231243. The reversal of 52231222 is 22213225.

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

It is a super-2 number, since 2×52231222² = 5456201103226568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 52231222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13057804 + ... + 13057807.

It is an arithmetic number, because the mean of its divisors is an integer number (19586709).

Almost surely, 2^52231222 is an apocalyptic number.

52231222 is a deficient number, since it is larger than the sum of its proper divisors (26115614).

52231222 is a wasteful number, since it uses less digits than its factorization.

52231222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26115613.

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

The square root of 52231222 is about 7227.1171292570. The cubic root of 52231222 is about 373.8035276407.

Adding to 52231222 its reverse (22213225), we get a palindrome (74444447).

The spelling of 52231222 in words is "fifty-two million, two hundred thirty-one thousand, two hundred twenty-two".