51171320522 has 32 divisors (see below), whose sum is σ = 88861449600. Its totient is φ = 21646260288.

The previous prime is 51171320491. The next prime is 51171320567. The reversal of 51171320522 is 22502317115.

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 15 ways as a sum of consecutive naturals, for example, 1268804 + ... + 1308512.

It is an arithmetic number, because the mean of its divisors is an integer number (2776920300).

Almost surely, 2^51171320522 is an apocalyptic number.

51171320522 is a deficient number, since it is larger than the sum of its proper divisors (37690129078).

51171320522 is a wasteful number, since it uses less digits than its factorization.

51171320522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40910.

The product of its (nonzero) digits is 4200, while the sum is 29.

Adding to 51171320522 its reverse (22502317115), we get a palindrome (73673637637).

It can be divided in two parts, 511713 and 20522, that added together give a palindrome (532235).

The spelling of 51171320522 in words is "fifty-one billion, one hundred seventy-one million, three hundred twenty thousand, five hundred twenty-two".