51000044 has 6 divisors (see below), whose sum is σ = 89250084. Its totient is φ = 25500020.

The previous prime is 51000041. The next prime is 51000049. The reversal of 51000044 is 44000015.

It is a junction number, because it is equal to n+sod(n) for n = 50999992 and 51000028.

It is not an unprimeable number, because it can be changed into a prime (51000041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6375002 + ... + 6375009.

It is an arithmetic number, because the mean of its divisors is an integer number (14875014).

Almost surely, 2^51000044 is an apocalyptic number.

It is an amenable number.

51000044 is a deficient number, since it is larger than the sum of its proper divisors (38250040).

51000044 is a wasteful number, since it uses less digits than its factorization.

51000044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12750015 (or 12750013 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 51000044 is about 7141.4315091584. The cubic root of 51000044 is about 370.8430835742.

Adding to 51000044 its reverse (44000015), we get a palindrome (95000059).

The spelling of 51000044 in words is "fifty-one million, forty-four", and thus it is an aban number.