51559065 has 32 divisors (see below), whose sum is σ = 96489600. Its totient is φ = 26049600.

The previous prime is 51559063. The next prime is 51559069. The reversal of 51559065 is 56095515.

51559065 is a `hidden beast` number, since 5 + 1 + 5 + 590 + 65 = 666.

51559065 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 51559065 - 2¹ = 51559063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51559061) 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 31 ways as a sum of consecutive naturals, for example, 7486 + ... + 12615.

It is an arithmetic number, because the mean of its divisors is an integer number (3015300).

Almost surely, 2^51559065 is an apocalyptic number.

It is an amenable number.

51559065 is a deficient number, since it is larger than the sum of its proper divisors (44930535).

51559065 is a wasteful number, since it uses less digits than its factorization.

51559065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20134 (or 20128 counting only the distinct ones).

The product of its (nonzero) digits is 33750, while the sum is 36.

The square root of 51559065 is about 7180.4641214896. The cubic root of 51559065 is about 372.1931229283.

The spelling of 51559065 in words is "fifty-one million, five hundred fifty-nine thousand, sixty-five".