51286165 has 16 divisors (see below), whose sum is σ = 71834112. Its totient is φ = 34418304.

The previous prime is 51286141. The next prime is 51286171. The reversal of 51286165 is 56168215.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51286165 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51286165.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 13944 + ... + 17233.

It is an arithmetic number, because the mean of its divisors is an integer number (4489632).

Almost surely, 2^51286165 is an apocalyptic number.

It is an amenable number.

51286165 is a deficient number, since it is larger than the sum of its proper divisors (20547947).

51286165 is a wasteful number, since it uses less digits than its factorization.

51286165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31236.

The product of its digits is 14400, while the sum is 34.

The square root of 51286165 is about 7161.4359593590. The cubic root of 51286165 is about 371.5352933326.

The spelling of 51286165 in words is "fifty-one million, two hundred eighty-six thousand, one hundred sixty-five".