51684448 has 12 divisors (see below), whose sum is σ = 101753820. Its totient is φ = 25842208.

The previous prime is 51684439. The next prime is 51684461. The reversal of 51684448 is 84448615.

It is a self number, because there is not a number n which added to its sum of digits gives 51684448.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 807538 + ... + 807601.

It is an arithmetic number, because the mean of its divisors is an integer number (8479485).

Almost surely, 2^51684448 is an apocalyptic number.

It is an amenable number.

51684448 is a deficient number, since it is larger than the sum of its proper divisors (50069372).

51684448 is a wasteful number, since it uses less digits than its factorization.

51684448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615149 (or 1615141 counting only the distinct ones).

The product of its digits is 122880, while the sum is 40.

The square root of 51684448 is about 7189.1896622638. The cubic root of 51684448 is about 372.4945824475.

The spelling of 51684448 in words is "fifty-one million, six hundred eighty-four thousand, four hundred forty-eight".