51986336 has 12 divisors (see below), whose sum is σ = 102348162. Its totient is φ = 25993152.

The previous prime is 51986329. The next prime is 51986353. The reversal of 51986336 is 63368915.

51986336 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 37210000 + 14776336 = 6100^2 + 3844^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51986293 and 51986302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 812255 + ... + 812318.

Almost surely, 2^51986336 is an apocalyptic number.

It is an amenable number.

51986336 is a deficient number, since it is larger than the sum of its proper divisors (50361826).

51986336 is a wasteful number, since it uses less digits than its factorization.

51986336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624583 (or 1624575 counting only the distinct ones).

The product of its digits is 116640, while the sum is 41.

The square root of 51986336 is about 7210.1550607459. The cubic root of 51986336 is about 373.2184198482.

The spelling of 51986336 in words is "fifty-one million, nine hundred eighty-six thousand, three hundred thirty-six".