51222235552 has 24 divisors (see below), whose sum is σ = 101049191712. Its totient is φ = 25558948800.

The previous prime is 51222235531. The next prime is 51222235601. The reversal of 51222235552 is 25553222215.

It is a happy number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1614324 + ... + 1645747.

It is an arithmetic number, because the mean of its divisors is an integer number (4210382988).

Almost surely, 2^51222235552 is an apocalyptic number.

It is an amenable number.

51222235552 is a deficient number, since it is larger than the sum of its proper divisors (49826956160).

51222235552 is a wasteful number, since it uses less digits than its factorization.

51222235552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3260572 (or 3260564 counting only the distinct ones).

The product of its digits is 60000, while the sum is 34.

Adding to 51222235552 its reverse (25553222215), we get a palindrome (76775457767).

The spelling of 51222235552 in words is "fifty-one billion, two hundred twenty-two million, two hundred thirty-five thousand, five hundred fifty-two".