165364417 has 4 divisors (see below), whose sum is σ = 165443796. Its totient is φ = 165285040.

The previous prime is 165364387. The next prime is 165364427. The reversal of 165364417 is 714463561.

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 66977856 + 98386561 = 8184^2 + 9919^2 .

It is a cyclic number.

It is not a de Polignac number, because 165364417 - 2¹¹ = 165362369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165364427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36478 + ... + 40759.

It is an arithmetic number, because the mean of its divisors is an integer number (41360949).

Almost surely, 2^165364417 is an apocalyptic number.

It is an amenable number.

165364417 is a deficient number, since it is larger than the sum of its proper divisors (79379).

165364417 is an equidigital number, since it uses as much as digits as its factorization.

165364417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79378.

The product of its digits is 60480, while the sum is 37.

The square root of 165364417 is about 12859.4096676325. The cubic root of 165364417 is about 548.8841475818.

The spelling of 165364417 in words is "one hundred sixty-five million, three hundred sixty-four thousand, four hundred seventeen".