51875145 has 24 divisors (see below), whose sum is σ = 102762816. Its totient is φ = 23714208.

The previous prime is 51875137. The next prime is 51875167. The reversal of 51875145 is 54157815.

51875145 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 51875145 - 2³ = 51875137 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 82027 + ... + 82656.

It is an arithmetic number, because the mean of its divisors is an integer number (4281784).

Almost surely, 2^51875145 is an apocalyptic number.

It is an amenable number.

51875145 is a deficient number, since it is larger than the sum of its proper divisors (50887671).

51875145 is a wasteful number, since it uses less digits than its factorization.

51875145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164701 (or 164698 counting only the distinct ones).

The product of its digits is 28000, while the sum is 36.

The square root of 51875145 is about 7202.4402114839. The cubic root of 51875145 is about 372.9521437835.

The spelling of 51875145 in words is "fifty-one million, eight hundred seventy-five thousand, one hundred forty-five".