51877728 has 72 divisors (see below), whose sum is σ = 168609168. Its totient is φ = 14821632.

The previous prime is 51877699. The next prime is 51877729. The reversal of 51877728 is 82777815.

51877728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51877729) 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 11 ways as a sum of consecutive naturals, for example, 10851 + ... + 14882.

It is an arithmetic number, because the mean of its divisors is an integer number (2341794).

Almost surely, 2^51877728 is an apocalyptic number.

It is an amenable number.

51877728 is an abundant number, since it is smaller than the sum of its proper divisors (116731440).

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

51877728 is a wasteful number, since it uses less digits than its factorization.

51877728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25756 (or 25745 counting only the distinct ones).

The product of its digits is 219520, while the sum is 45.

The square root of 51877728 is about 7202.6195234789. The cubic root of 51877728 is about 372.9583337703.

The spelling of 51877728 in words is "fifty-one million, eight hundred seventy-seven thousand, seven hundred twenty-eight".