51728576 has 56 divisors (see below), whose sum is σ = 108630720. Its totient is φ = 24399872.

The previous prime is 51728561. The next prime is 51728609. The reversal of 51728576 is 67582715.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86936 + ... + 87528.

Almost surely, 2^51728576 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 51728576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54315360).

51728576 is an abundant number, since it is smaller than the sum of its proper divisors (56902144).

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

51728576 is a wasteful number, since it uses less digits than its factorization.

51728576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681 (or 671 counting only the distinct ones).

The product of its digits is 117600, while the sum is 41.

The square root of 51728576 is about 7192.2580598863. The cubic root of 51728576 is about 372.6005638127.

The spelling of 51728576 in words is "fifty-one million, seven hundred twenty-eight thousand, five hundred seventy-six".