51286804 has 6 divisors (see below), whose sum is σ = 89751914. Its totient is φ = 25643400.

The previous prime is 51286801. The next prime is 51286811. The reversal of 51286804 is 40868215.

It can be written as a sum of positive squares in only one way, i.e., 48720400 + 2566404 = 6980^2 + 1602^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51286804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51286801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6410847 + ... + 6410854.

Almost surely, 2^51286804 is an apocalyptic number.

It is an amenable number.

51286804 is a deficient number, since it is larger than the sum of its proper divisors (38465110).

51286804 is a wasteful number, since it uses less digits than its factorization.

51286804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12821705 (or 12821703 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 51286804 is about 7161.4805731776. The cubic root of 51286804 is about 371.5368363742.

The spelling of 51286804 in words is "fifty-one million, two hundred eighty-six thousand, eight hundred four".