52311222 has 12 divisors (see below), whose sum is σ = 113341020. Its totient is φ = 17437068.

The previous prime is 52311211. The next prime is 52311239. The reversal of 52311222 is 22211325.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 2906179 = 52311222 / (5 + 2 + 3 + 1 + 1 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 52311195 and 52311204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1453072 + ... + 1453107.

It is an arithmetic number, because the mean of its divisors is an integer number (9445085).

Almost surely, 2^52311222 is an apocalyptic number.

52311222 is an abundant number, since it is smaller than the sum of its proper divisors (61029798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52311222 is a wasteful number, since it uses less digits than its factorization.

52311222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2906187 (or 2906184 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 52311222 is about 7232.6497219207. The cubic root of 52311222 is about 373.9942757948.

Adding to 52311222 its reverse (22211325), we get a palindrome (74522547).

The spelling of 52311222 in words is "fifty-two million, three hundred eleven thousand, two hundred twenty-two".