51006875 has 10 divisors (see below), whose sum is σ = 63738972. Its totient is φ = 40805000.

The previous prime is 51006869. The next prime is 51006889. The reversal of 51006875 is 57860015.

51006875 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51006875 - 2¹⁸ = 50744731 is a prime.

It is a Duffinian 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 9 ways as a sum of consecutive naturals, for example, 40181 + ... + 41430.

Almost surely, 2^51006875 is an apocalyptic number.

51006875 is a deficient number, since it is larger than the sum of its proper divisors (12732097).

51006875 is an frugal number, since it uses more digits than its factorization.

51006875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81631 (or 81616 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 51006875 is about 7141.9097586010. The cubic root of 51006875 is about 370.8596398738.

The spelling of 51006875 in words is "fifty-one million, six thousand, eight hundred seventy-five".