49165 has 4 divisors (see below), whose sum is σ = 59004. Its totient is φ = 39328.

The previous prime is 49157. The next prime is 49169. The reversal of 49165 is 56194.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56194 = 2 ⋅28097.

It can be written as a sum of positive squares in 2 ways, for example, as 21609 + 27556 = 147^2 + 166^2 .

It is a cyclic number.

It is not a de Polignac number, because 49165 - 2³ = 49157 is a prime.

It is a Duffinian number.

49165 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4912 + ... + 4921.

It is an arithmetic number, because the mean of its divisors is an integer number (14751).

2⁴⁹¹⁶⁵ is an apocalyptic number.

It is an amenable number.

49165 is a deficient number, since it is larger than the sum of its proper divisors (9839).

49165 is an equidigital number, since it uses as much as digits as its factorization.

49165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9838.

The product of its digits is 1080, while the sum is 25.

The square root of 49165 is about 221.7318199988. The cubic root of 49165 is about 36.6340849226.

The spelling of 49165 in words is "forty-nine thousand, one hundred sixty-five".