51066165 has 16 divisors (see below), whose sum is σ = 82692288. Its totient is φ = 26906496.

The previous prime is 51066161. The next prime is 51066193. The reversal of 51066165 is 56166015.

51066165 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 51066165 - 2² = 51066161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51066161) 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 15 ways as a sum of consecutive naturals, for example, 19264 + ... + 21753.

It is an arithmetic number, because the mean of its divisors is an integer number (5168268).

Almost surely, 2^51066165 is an apocalyptic number.

It is an amenable number.

51066165 is a deficient number, since it is larger than the sum of its proper divisors (31626123).

51066165 is a wasteful number, since it uses less digits than its factorization.

51066165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41108.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 51066165 is about 7146.0594036154. The cubic root of 51066165 is about 371.0032790327.

The spelling of 51066165 in words is "fifty-one million, sixty-six thousand, one hundred sixty-five".