51917445316 has 27 divisors (see below), whose sum is σ = 99875638317. Its totient is φ = 23596560240.

The previous prime is 51917445259. The next prime is 51917445361. The reversal of 51917445316 is 61354471915.

The square root of 51917445316 is 227854.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 25898464900 + 26018980416 = 160930^2 + 161304^2 .

It is a super-2 number, since 2×51917445316² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5007610 + ... + 5017966.

Almost surely, 2^51917445316 is an apocalyptic number.

51917445316 is the 227854-th square number.

It is an amenable number.

51917445316 is a deficient number, since it is larger than the sum of its proper divisors (47958193001).

51917445316 is an equidigital number, since it uses as much as digits as its factorization.

51917445316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20740 (or 10370 counting only the distinct ones).

The product of its digits is 453600, while the sum is 46.

The spelling of 51917445316 in words is "fifty-one billion, nine hundred seventeen million, four hundred forty-five thousand, three hundred sixteen".