51311241422 has 32 divisors (see below), whose sum is σ = 89672313600. Its totient is φ = 21564813888.

The previous prime is 51311241409. The next prime is 51311241469. The reversal of 51311241422 is 22414211315.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51311241391 and 51311241400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261893 + ... + 413775.

It is an arithmetic number, because the mean of its divisors is an integer number (2802259800).

Almost surely, 2^51311241422 is an apocalyptic number.

51311241422 is a deficient number, since it is larger than the sum of its proper divisors (38361072178).

51311241422 is a wasteful number, since it uses less digits than its factorization.

51311241422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152360.

The product of its digits is 1920, while the sum is 26.

Adding to 51311241422 its reverse (22414211315), we get a palindrome (73725452737).

The spelling of 51311241422 in words is "fifty-one billion, three hundred eleven million, two hundred forty-one thousand, four hundred twenty-two".