52021222 has 8 divisors (see below), whose sum is σ = 85125672. Its totient is φ = 23646000.

The previous prime is 52021219. The next prime is 52021247. The reversal of 52021222 is 22212025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 52021196 and 52021205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1182279 + ... + 1182322.

It is an arithmetic number, because the mean of its divisors is an integer number (10640709).

Almost surely, 2^52021222 is an apocalyptic number.

52021222 is a deficient number, since it is larger than the sum of its proper divisors (33104450).

52021222 is a wasteful number, since it uses less digits than its factorization.

52021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2364614.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 52021222 is about 7212.5738817706. The cubic root of 52021222 is about 373.3018852833.

Adding to 52021222 its reverse (22212025), we get a palindrome (74233247).

The spelling of 52021222 in words is "fifty-two million, twenty-one thousand, two hundred twenty-two".