516612222 has 64 divisors (see below), whose sum is σ = 1316313600. Its totient is φ = 147121920.

The previous prime is 516612221. The next prime is 516612227. The reversal of 516612222 is 222216615.

516612222 is a `hidden beast` number, since 516 + 6 + 122 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516612221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123054 + ... + 127182.

It is an arithmetic number, because the mean of its divisors is an integer number (20567400).

Almost surely, 2^516612222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 516612222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (658156800).

516612222 is an abundant number, since it is smaller than the sum of its proper divisors (799701378).

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

516612222 is a wasteful number, since it uses less digits than its factorization.

516612222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4478 (or 4472 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 516612222 is about 22729.1051737634. The cubic root of 516612222 is about 802.3950216422.

Adding to 516612222 its reverse (222216615), we get a palindrome (738828837).

The spelling of 516612222 in words is "five hundred sixteen million, six hundred twelve thousand, two hundred twenty-two".