101165 has 4 divisors (see below), whose sum is σ = 121404. Its totient is φ = 80928.

The previous prime is 101161. The next prime is 101173. The reversal of 101165 is 561101.

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 44521 + 56644 = 211^2 + 238^2 .

It is a cyclic number.

It is not a de Polignac number, because 101165 - 2² = 101161 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101161) 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, 10112 + ... + 10121.

It is an arithmetic number, because the mean of its divisors is an integer number (30351).

2¹⁰¹¹⁶⁵ is an apocalyptic number.

It is an amenable number.

101165 is a deficient number, since it is larger than the sum of its proper divisors (20239).

101165 is an equidigital number, since it uses as much as digits as its factorization.

101165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20238.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 101165 is about 318.0644588759. The cubic root of 101165 is about 46.5954412334.

Adding to 101165 its reverse (561101), we get a palindrome (662266).

The spelling of 101165 in words is "one hundred one thousand, one hundred sixty-five".