50665165 has 4 divisors (see below), whose sum is σ = 60798204. Its totient is φ = 40532128.

The previous prime is 50665163. The next prime is 50665169. The reversal of 50665165 is 56156605.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19873764 + 30791401 = 4458^2 + 5549^2 .

It is a cyclic number.

It is not a de Polignac number, because 50665165 - 2¹ = 50665163 is a prime.

It is a super-3 number, since 3×50665165³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50665165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50665163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5066512 + ... + 5066521.

It is an arithmetic number, because the mean of its divisors is an integer number (15199551).

Almost surely, 2^50665165 is an apocalyptic number.

It is an amenable number.

50665165 is a deficient number, since it is larger than the sum of its proper divisors (10133039).

50665165 is a wasteful number, since it uses less digits than its factorization.

50665165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10133038.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 50665165 is about 7117.9466842623. The cubic root of 50665165 is about 370.0296177898.

The spelling of 50665165 in words is "fifty million, six hundred sixty-five thousand, one hundred sixty-five".