165075263 has 4 divisors (see below), whose sum is σ = 165479280. Its totient is φ = 164671248.

The previous prime is 165075257. The next prime is 165075277. The reversal of 165075263 is 362570561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 362570561 = 431 ⋅841231.

It is a cyclic number.

It is not a de Polignac number, because 165075263 - 2⁴ = 165075247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165075283) 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, 201395 + ... + 202212.

It is an arithmetic number, because the mean of its divisors is an integer number (41369820).

Almost surely, 2^165075263 is an apocalyptic number.

165075263 is a deficient number, since it is larger than the sum of its proper divisors (404017).

165075263 is an equidigital number, since it uses as much as digits as its factorization.

165075263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404016.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 165075263 is about 12848.1618529656. The cubic root of 165075263 is about 548.5640371112.

The spelling of 165075263 in words is "one hundred sixty-five million, seventy-five thousand, two hundred sixty-three".