51501928 has 16 divisors (see below), whose sum is σ = 99176580. Its totient is φ = 25054848.

The previous prime is 51501893. The next prime is 51501949. The reversal of 51501928 is 82910515.

51501928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 46758244 + 4743684 = 6838^2 + 2178^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51501928.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 86701 + ... + 87292.

Almost surely, 2^51501928 is an apocalyptic number.

It is an amenable number.

51501928 is a deficient number, since it is larger than the sum of its proper divisors (47674652).

51501928 is a wasteful number, since it uses less digits than its factorization.

51501928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174036 (or 174032 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 31.

The square root of 51501928 is about 7176.4843760716. The cubic root of 51501928 is about 372.0555857894.

The spelling of 51501928 in words is "fifty-one million, five hundred one thousand, nine hundred twenty-eight".