51686710 has 16 divisors (see below), whose sum is σ = 93891600. Its totient is φ = 20484576.

The previous prime is 51686683. The next prime is 51686711. The reversal of 51686710 is 1768615.

51686710 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51686711) 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 7 ways as a sum of consecutive naturals, for example, 22620 + ... + 24799.

It is an arithmetic number, because the mean of its divisors is an integer number (5868225).

Almost surely, 2^51686710 is an apocalyptic number.

51686710 is a deficient number, since it is larger than the sum of its proper divisors (42204890).

51686710 is a wasteful number, since it uses less digits than its factorization.

51686710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47535.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 51686710 is about 7189.3469800810. The cubic root of 51686710 is about 372.5000165158.

The spelling of 51686710 in words is "fifty-one million, six hundred eighty-six thousand, seven hundred ten".