52220222 has 4 divisors (see below), whose sum is σ = 78330336. Its totient is φ = 26110110.

The previous prime is 52220219. The next prime is 52220249. The reversal of 52220222 is 22202225.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 52220222.

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, 13055054 + ... + 13055057.

It is an arithmetic number, because the mean of its divisors is an integer number (19582584).

Almost surely, 2^52220222 is an apocalyptic number.

52220222 is a deficient number, since it is larger than the sum of its proper divisors (26110114).

52220222 is a wasteful number, since it uses less digits than its factorization.

52220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26110113.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 52220222 is about 7226.3560665110. The cubic root of 52220222 is about 373.7772845411. Note that the first 3 decimals are identical.

Adding to 52220222 its reverse (22202225), we get a palindrome (74422447).

The spelling of 52220222 in words is "fifty-two million, two hundred twenty thousand, two hundred twenty-two".