165262197 has 4 divisors (see below), whose sum is σ = 220349600. Its totient is φ = 110174796.

The previous prime is 165262189. The next prime is 165262211. The reversal of 165262197 is 791262561.

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 not a de Polignac number, because 165262197 - 2³ = 165262189 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 (165262187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27543697 + ... + 27543702.

It is an arithmetic number, because the mean of its divisors is an integer number (55087400).

Almost surely, 2^165262197 is an apocalyptic number.

It is an amenable number.

165262197 is a deficient number, since it is larger than the sum of its proper divisors (55087403).

165262197 is an equidigital number, since it uses as much as digits as its factorization.

165262197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55087402.

The product of its digits is 45360, while the sum is 39.

The square root of 165262197 is about 12855.4345317457. The cubic root of 165262197 is about 548.7710267073.

The spelling of 165262197 in words is "one hundred sixty-five million, two hundred sixty-two thousand, one hundred ninety-seven".