51789688 has 8 divisors (see below), whose sum is σ = 97105680. Its totient is φ = 25894840.

The previous prime is 51789659. The next prime is 51789691. The reversal of 51789688 is 88698715.

It is a tau number, because it is divible by the number of its divisors (8).

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, 3236848 + ... + 3236863.

It is an arithmetic number, because the mean of its divisors is an integer number (12138210).

Almost surely, 2^51789688 is an apocalyptic number.

It is an amenable number.

51789688 is a deficient number, since it is larger than the sum of its proper divisors (45315992).

51789688 is a wasteful number, since it uses less digits than its factorization.

51789688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6473717 (or 6473713 counting only the distinct ones).

The product of its digits is 967680, while the sum is 52.

The square root of 51789688 is about 7196.5052629731. The cubic root of 51789688 is about 372.7472358352.

The spelling of 51789688 in words is "fifty-one million, seven hundred eighty-nine thousand, six hundred eighty-eight".