165522741 has 4 divisors (see below), whose sum is σ = 220696992. Its totient is φ = 110348492.

The previous prime is 165522689. The next prime is 165522757. The reversal of 165522741 is 147225561.

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 not a de Polignac number, because 165522741 - 2⁶ = 165522677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165522041) 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, 27587121 + ... + 27587126.

It is an arithmetic number, because the mean of its divisors is an integer number (55174248).

Almost surely, 2^165522741 is an apocalyptic number.

It is an amenable number.

165522741 is a deficient number, since it is larger than the sum of its proper divisors (55174251).

165522741 is an equidigital number, since it uses as much as digits as its factorization.

165522741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55174250.

The product of its digits is 16800, while the sum is 33.

The square root of 165522741 is about 12865.5641539732. The cubic root of 165522741 is about 549.0592634787.

The spelling of 165522741 in words is "one hundred sixty-five million, five hundred twenty-two thousand, seven hundred forty-one".