51791228 has 12 divisors (see below), whose sum is σ = 90728400. Its totient is φ = 25868832.

The previous prime is 51791191. The next prime is 51791263. The reversal of 51791228 is 82219715.

51791228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 1976 + ... + 10367.

It is an arithmetic number, because the mean of its divisors is an integer number (7560700).

Almost surely, 2^51791228 is an apocalyptic number.

It is an amenable number.

51791228 is a deficient number, since it is larger than the sum of its proper divisors (38937172).

51791228 is a wasteful number, since it uses less digits than its factorization.

51791228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13396 (or 13394 counting only the distinct ones).

The product of its digits is 10080, while the sum is 35.

The square root of 51791228 is about 7196.6122585561. The cubic root of 51791228 is about 372.7509304256.

The spelling of 51791228 in words is "fifty-one million, seven hundred ninety-one thousand, two hundred twenty-eight".