51312628 has 12 divisors (see below), whose sum is σ = 89858272. Its totient is φ = 25638840.

The previous prime is 51312617. The next prime is 51312637. The reversal of 51312628 is 82621315.

It is a junction number, because it is equal to n+sod(n) for n = 51312596 and 51312605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4033 + ... + 10903.

Almost surely, 2^51312628 is an apocalyptic number.

It is an amenable number.

51312628 is a deficient number, since it is larger than the sum of its proper divisors (38545644).

51312628 is a wasteful number, since it uses less digits than its factorization.

51312628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8742 (or 8740 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 51312628 is about 7163.2833254032. The cubic root of 51312628 is about 371.5991848187.

The spelling of 51312628 in words is "fifty-one million, three hundred twelve thousand, six hundred twenty-eight".