248165 has 4 divisors (see below), whose sum is σ = 297804. Its totient is φ = 198528.

The previous prime is 248161. The next prime is 248167. The reversal of 248165 is 561842.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 561842 = 2 ⋅280921.

It can be written as a sum of positive squares in 2 ways, for example, as 73441 + 174724 = 271^2 + 418^2 .

It is a cyclic number.

It is not a de Polignac number, because 248165 - 2² = 248161 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248161) 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, 24812 + ... + 24821.

It is an arithmetic number, because the mean of its divisors is an integer number (74451).

2²⁴⁸¹⁶⁵ is an apocalyptic number.

It is an amenable number.

248165 is a deficient number, since it is larger than the sum of its proper divisors (49639).

248165 is an equidigital number, since it uses as much as digits as its factorization.

248165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49638.

The product of its digits is 1920, while the sum is 26.

The square root of 248165 is about 498.1616203603. The cubic root of 248165 is about 62.8415435021.

The spelling of 248165 in words is "two hundred forty-eight thousand, one hundred sixty-five".