51008072 has 24 divisors (see below), whose sum is σ = 96738390. Its totient is φ = 25214400.

The previous prime is 51008047. The next prime is 51008107. The reversal of 51008072 is 27080015.

It can be written as a sum of positive squares in only one way, i.e., 35688676 + 15319396 = 5974^2 + 3914^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84572 + ... + 85172.

Almost surely, 2^51008072 is an apocalyptic number.

It is an amenable number.

51008072 is a deficient number, since it is larger than the sum of its proper divisors (45730318).

51008072 is a wasteful number, since it uses less digits than its factorization.

51008072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813 (or 706 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 51008072 is about 7141.9935592242. The cubic root of 51008072 is about 370.8625408913.

Adding to 51008072 its reverse (27080015), we get a palindrome (78088087).

The spelling of 51008072 in words is "fifty-one million, eight thousand, seventy-two".