51853766056 has 16 divisors (see below), whose sum is σ = 97229078100. Its totient is φ = 25926011904.

The previous prime is 51853766051. The next prime is 51853766057. The reversal of 51853766056 is 65066735815.

It can be written as a sum of positive squares in 2 ways, for example, as 44380163556 + 7473602500 = 210666^2 + 86450^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51853765994 and 51853766012.

It is not an unprimeable number, because it can be changed into a prime (51853766051) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 193480 + ... + 375688.

Almost surely, 2^51853766056 is an apocalyptic number.

It is an amenable number.

51853766056 is a deficient number, since it is larger than the sum of its proper divisors (45375312044).

51853766056 is a wasteful number, since it uses less digits than its factorization.

51853766056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217788 (or 217784 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 52.

The spelling of 51853766056 in words is "fifty-one billion, eight hundred fifty-three million, seven hundred sixty-six thousand, fifty-six".