51819628 has 12 divisors (see below), whose sum is σ = 103639312. Its totient is φ = 22208400.

The previous prime is 51819619. The next prime is 51819629. The reversal of 51819628 is 82691815.

51819628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

51819628 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (51819629) 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 3 ways as a sum of consecutive naturals, for example, 925323 + ... + 925378.

Almost surely, 2^51819628 is an apocalyptic number.

It is an amenable number.

51819628 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51819628 is a wasteful number, since it uses less digits than its factorization.

51819628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1850712 (or 1850710 counting only the distinct ones).

The product of its digits is 34560, while the sum is 40.

The square root of 51819628 is about 7198.5851387616. The cubic root of 51819628 is about 372.8190513053.

The spelling of 51819628 in words is "fifty-one million, eight hundred nineteen thousand, six hundred twenty-eight".