51367165 has 16 divisors (see below), whose sum is σ = 67708800. Its totient is φ = 37236672.

The previous prime is 51367163. The next prime is 51367171. The reversal of 51367165 is 56176315.

It is a cyclic number.

It is not a de Polignac number, because 51367165 - 2¹ = 51367163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51367165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51367163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9570 + ... + 13939.

It is an arithmetic number, because the mean of its divisors is an integer number (4231800).

Almost surely, 2^51367165 is an apocalyptic number.

It is an amenable number.

51367165 is a deficient number, since it is larger than the sum of its proper divisors (16341635).

51367165 is a wasteful number, since it uses less digits than its factorization.

51367165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23556.

The product of its digits is 18900, while the sum is 34.

The square root of 51367165 is about 7167.0890185626. The cubic root of 51367165 is about 371.7307880905.

The spelling of 51367165 in words is "fifty-one million, three hundred sixty-seven thousand, one hundred sixty-five".