165049 has 2 divisors, whose sum is σ = 165050.
Its totient is φ = 165048.
The previous prime is 165047. The next prime is 165059. The reversal of 165049 is 940561.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 164025 + 1024 = 405^2 + 32^2
It is a cyclic number.
It is not a de Polignac number, because 165049 - 21 = 165047 is a prime.
Together with 165047, it forms a pair of twin primes.
It is not a weakly prime, because it can be changed into another prime (165041) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82524 + 82525.
It is an arithmetic number, because the mean of its divisors is an integer number (82525).
2165049 is an apocalyptic number.
It is an amenable number.
165049 is a deficient number, since it is larger than the sum of its proper divisors (1).
165049 is an equidigital number, since it uses as much as digits as its factorization.
165049 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 1080, while the sum is 25.
The square root of 165049 is about 406.2622305851.
The cubic root of 165049 is about 54.8534943914.
The spelling of 165049 in words is "one hundred sixty-five thousand, forty-nine".