51144028 has 48 divisors (see below), whose sum is σ = 100124640. Its totient is φ = 22708224.

The previous prime is 51144013. The next prime is 51144061. The reversal of 51144028 is 82044115.

It is a junction number, because it is equal to n+sod(n) for n = 51143993 and 51144011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198876 + ... + 199132.

It is an arithmetic number, because the mean of its divisors is an integer number (2085930).

Almost surely, 2^51144028 is an apocalyptic number.

It is an amenable number.

51144028 is a deficient number, since it is larger than the sum of its proper divisors (48980612).

51144028 is a wasteful number, since it uses less digits than its factorization.

51144028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 51144028 is about 7151.5052960898. The cubic root of 51144028 is about 371.1917453667.

The spelling of 51144028 in words is "fifty-one million, one hundred forty-four thousand, twenty-eight".