51226317111 has 4 divisors (see below), whose sum is σ = 68301756152. Its totient is φ = 34150878072.

The previous prime is 51226317101. The next prime is 51226317119. The reversal of 51226317111 is 11171362215.

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

It is not a de Polignac number, because 51226317111 - 2⁷ = 51226316983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51226317119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8537719516 + ... + 8537719521.

It is an arithmetic number, because the mean of its divisors is an integer number (17075439038).

Almost surely, 2^51226317111 is an apocalyptic number.

51226317111 is a deficient number, since it is larger than the sum of its proper divisors (17075439041).

51226317111 is a wasteful number, since it uses less digits than its factorization.

51226317111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17075439040.

The product of its digits is 2520, while the sum is 30.

Adding to 51226317111 its reverse (11171362215), we get a palindrome (62397679326).

The spelling of 51226317111 in words is "fifty-one billion, two hundred twenty-six million, three hundred seventeen thousand, one hundred eleven".