165150101 has 4 divisors (see below), whose sum is σ = 165176172. Its totient is φ = 165124032.

The previous prime is 165150079. The next prime is 165150127. The reversal of 165150101 is 101051561.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 101051561 = 13 ⋅7773197.

It can be written as a sum of positive squares in 2 ways, for example, as 117180625 + 47969476 = 10825^2 + 6926^2 .

It is a cyclic number.

It is not a de Polignac number, because 165150101 - 2¹⁰ = 165149077 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 (165150131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3245 + ... + 18461.

It is an arithmetic number, because the mean of its divisors is an integer number (41294043).

Almost surely, 2^165150101 is an apocalyptic number.

It is an amenable number.

165150101 is a deficient number, since it is larger than the sum of its proper divisors (26071).

165150101 is a wasteful number, since it uses less digits than its factorization.

165150101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26070.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 165150101 is about 12851.0739239956. The cubic root of 165150101 is about 548.6469230067.

The spelling of 165150101 in words is "one hundred sixty-five million, one hundred fifty thousand, one hundred one".