51162222 has 8 divisors (see below), whose sum is σ = 102324456. Its totient is φ = 17054072.

The previous prime is 51162211. The next prime is 51162227. The reversal of 51162222 is 22226115.

It is a happy number.

51162222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

51162222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51162227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4263513 + ... + 4263524.

It is an arithmetic number, because the mean of its divisors is an integer number (12790557).

Almost surely, 2^51162222 is an apocalyptic number.

51162222 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.

51162222 is a wasteful number, since it uses less digits than its factorization.

51162222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8527042.

The product of its digits is 480, while the sum is 21.

The square root of 51162222 is about 7152.7772228694. Note that the first 3 decimals coincide. The cubic root of 51162222 is about 371.2357561223.

Adding to 51162222 its reverse (22226115), we get a palindrome (73388337).

The spelling of 51162222 in words is "fifty-one million, one hundred sixty-two thousand, two hundred twenty-two".