51786284356 has 9 divisors (see below), whose sum is σ = 90626794111. Its totient is φ = 25892914612.

The previous prime is 51786284351. The next prime is 51786284399. The reversal of 51786284356 is 65348268715.

It is a happy number.

The square root of 51786284356 is 227566.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51786284297 and 51786284306.

It is not an unprimeable number, because it can be changed into a prime (51786284351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 398241 + ... + 512023.

Almost surely, 2^51786284356 is an apocalyptic number.

51786284356 is the 227566-th square number.

It is an amenable number.

51786284356 is a deficient number, since it is larger than the sum of its proper divisors (38840509755).

51786284356 is an frugal number, since it uses more digits than its factorization.

51786284356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227570 (or 113785 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 55.

The spelling of 51786284356 in words is "fifty-one billion, seven hundred eighty-six million, two hundred eighty-four thousand, three hundred fifty-six".