52551222 has 8 divisors (see below), whose sum is σ = 105102456. Its totient is φ = 17517072.

The previous prime is 52551179. The next prime is 52551223. The reversal of 52551222 is 22215525.

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

52551222 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 52551192 and 52551201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52551223) 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, 4379263 + ... + 4379274.

It is an arithmetic number, because the mean of its divisors is an integer number (13137807).

Almost surely, 2^52551222 is an apocalyptic number.

52551222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

52551222 is a wasteful number, since it uses less digits than its factorization.

52551222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8758542.

The product of its digits is 2000, while the sum is 24.

The square root of 52551222 is about 7249.2221651706. Note that the first 3 decimals coincide. The cubic root of 52551222 is about 374.5653559757.

Adding to 52551222 its reverse (22215525), we get a palindrome (74766747).

The spelling of 52551222 in words is "fifty-two million, five hundred fifty-one thousand, two hundred twenty-two".