51235222 has 4 divisors (see below), whose sum is σ = 76852836. Its totient is φ = 25617610.

The previous prime is 51235207. The next prime is 51235241. The reversal of 51235222 is 22253215.

51235222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 51235193 and 51235202.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 12808804 + ... + 12808807.

It is an arithmetic number, because the mean of its divisors is an integer number (19213209).

Almost surely, 2^51235222 is an apocalyptic number.

51235222 is a deficient number, since it is larger than the sum of its proper divisors (25617614).

51235222 is a wasteful number, since it uses less digits than its factorization.

51235222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25617613.

The product of its digits is 1200, while the sum is 22.

The square root of 51235222 is about 7157.8783169316. The cubic root of 51235222 is about 371.4122361511.

Adding to 51235222 its reverse (22253215), we get a palindrome (73488437).

The spelling of 51235222 in words is "fifty-one million, two hundred thirty-five thousand, two hundred twenty-two".