51499168 has 48 divisors (see below), whose sum is σ = 116726400. Its totient is φ = 21908736.

The previous prime is 51499163. The next prime is 51499181. The reversal of 51499168 is 86199415.

It is not an unprimeable number, because it can be changed into a prime (51499163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32605 + ... + 34147.

It is an arithmetic number, because the mean of its divisors is an integer number (2431800).

Almost surely, 2^51499168 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 51499168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58363200).

51499168 is an abundant number, since it is smaller than the sum of its proper divisors (65227232).

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

51499168 is a wasteful number, since it uses less digits than its factorization.

51499168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709 (or 1701 counting only the distinct ones).

The product of its digits is 77760, while the sum is 43.

The square root of 51499168 is about 7176.2920787827. The cubic root of 51499168 is about 372.0489394896.

The spelling of 51499168 in words is "fifty-one million, four hundred ninety-nine thousand, one hundred sixty-eight".