51683712 has 32 divisors (see below), whose sum is σ = 137285880. Its totient is φ = 17227776.

The previous prime is 51683651. The next prime is 51683717. The reversal of 51683712 is 21738615.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51683717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66913 + ... + 67680.

Almost surely, 2^51683712 is an apocalyptic number.

It is an amenable number.

51683712 is an abundant number, since it is smaller than the sum of its proper divisors (85602168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51683712 is a wasteful number, since it uses less digits than its factorization.

51683712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134610 (or 134598 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 51683712 is about 7189.1384741150. The cubic root of 51683712 is about 372.4928142992.

The spelling of 51683712 in words is "fifty-one million, six hundred eighty-three thousand, seven hundred twelve".