51165065 has 12 divisors (see below), whose sum is σ = 71422596. Its totient is φ = 35084448.

The previous prime is 51165029. The next prime is 51165083. The reversal of 51165065 is 56056115.

51165065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8602489 + 42562576 = 2933^2 + 6524^2 .

It is not a de Polignac number, because 51165065 - 2⁶ = 51165001 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 11 ways as a sum of consecutive naturals, for example, 104174 + ... + 104663.

It is an arithmetic number, because the mean of its divisors is an integer number (5951883).

Almost surely, 2^51165065 is an apocalyptic number.

It is an amenable number.

51165065 is a deficient number, since it is larger than the sum of its proper divisors (20257531).

51165065 is a wasteful number, since it uses less digits than its factorization.

51165065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208856 (or 208849 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 51165065 is about 7152.9759541047. The cubic root of 51165065 is about 371.2426323138.

The spelling of 51165065 in words is "fifty-one million, one hundred sixty-five thousand, sixty-five".