51685324 has 12 divisors (see below), whose sum is σ = 94382064. Its totient is φ = 24719024.

The previous prime is 51685313. The next prime is 51685327. The reversal of 51685324 is 42358615.

51685324 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 51685324.

It is not an unprimeable number, because it can be changed into a prime (51685327) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 280807 + ... + 280990.

It is an arithmetic number, because the mean of its divisors is an integer number (7865172).

Almost surely, 2^51685324 is an apocalyptic number.

It is an amenable number.

51685324 is a deficient number, since it is larger than the sum of its proper divisors (42696740).

51685324 is a wasteful number, since it uses less digits than its factorization.

51685324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561824 (or 561822 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

The square root of 51685324 is about 7189.2505868136. The cubic root of 51685324 is about 372.4966869066.

The spelling of 51685324 in words is "fifty-one million, six hundred eighty-five thousand, three hundred twenty-four".