165015023 has 8 divisors (see below), whose sum is σ = 169019136. Its totient is φ = 161044000.

The previous prime is 165014987. The next prime is 165015029. The reversal of 165015023 is 320510561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165015023 - 2¹² = 165010927 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165015023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165015029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1973 + ... + 18273.

It is an arithmetic number, because the mean of its divisors is an integer number (21127392).

Almost surely, 2^165015023 is an apocalyptic number.

165015023 is a deficient number, since it is larger than the sum of its proper divisors (4004113).

165015023 is a wasteful number, since it uses less digits than its factorization.

165015023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16545.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 165015023 is about 12845.8173348370. The cubic root of 165015023 is about 548.4973008490.

Adding to 165015023 its reverse (320510561), we get a palindrome (485525584).

The spelling of 165015023 in words is "one hundred sixty-five million, fifteen thousand, twenty-three".