165175249 has 4 divisors (see below), whose sum is σ = 168689664. Its totient is φ = 161660836.

The previous prime is 165175243. The next prime is 165175267. The reversal of 165175249 is 942571561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165175249 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165175243) 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, 1757137 + ... + 1757230.

It is an arithmetic number, because the mean of its divisors is an integer number (42172416).

Almost surely, 2^165175249 is an apocalyptic number.

It is an amenable number.

165175249 is a deficient number, since it is larger than the sum of its proper divisors (3514415).

165175249 is an equidigital number, since it uses as much as digits as its factorization.

165175249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3514414.

The product of its digits is 75600, while the sum is 40.

The square root of 165175249 is about 12852.0523263796. The cubic root of 165175249 is about 548.6747697402.

The spelling of 165175249 in words is "one hundred sixty-five million, one hundred seventy-five thousand, two hundred forty-nine".