51831168 has 96 divisors (see below), whose sum is σ = 142883640. Its totient is φ = 16644096.

The previous prime is 51831161. The next prime is 51831187. The reversal of 51831168 is 86113815.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51831161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 709980 + ... + 710052.

Almost surely, 2^51831168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51831168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71441820).

51831168 is an abundant number, since it is smaller than the sum of its proper divisors (91052472).

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

51831168 is an equidigital number, since it uses as much as digits as its factorization.

51831168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 121 counting only the distinct ones).

The product of its digits is 5760, while the sum is 33.

The square root of 51831168 is about 7199.3866405410. The cubic root of 51831168 is about 372.8467242977.

The spelling of 51831168 in words is "fifty-one million, eight hundred thirty-one thousand, one hundred sixty-eight".