51028845 has 24 divisors (see below), whose sum is σ = 94977504. Its totient is φ = 23327136.

The previous prime is 51028843. The next prime is 51028853. The reversal of 51028845 is 54882015.

51028845 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 51028845 - 2¹ = 51028843 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51028843) by changing a digit.

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, 33979 + ... + 35448.

It is an arithmetic number, because the mean of its divisors is an integer number (3957396).

Almost surely, 2^51028845 is an apocalyptic number.

It is an amenable number.

51028845 is a deficient number, since it is larger than the sum of its proper divisors (43948659).

51028845 is a wasteful number, since it uses less digits than its factorization.

51028845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69449 (or 69442 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 51028845 is about 7143.4476970158. The cubic root of 51028845 is about 370.9128785581.

The spelling of 51028845 in words is "fifty-one million, twenty-eight thousand, eight hundred forty-five".