165215 has 8 divisors (see below), whose sum is σ = 200448. Its totient is φ = 130720.
The previous prime is 165211. The next prime is 165229. The reversal of 165215 is 512561.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 165215 - 22 = 165211 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 (165211) 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, 770 + ... + 960.
It is an arithmetic number, because the mean of its divisors is an integer number (25056).
2165215 is an apocalyptic number.
165215 is a deficient number, since it is larger than the sum of its proper divisors (35233).
165215 is a wasteful number, since it uses less digits than its factorization.
165215 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 369.
The product of its digits is 300, while the sum is 20.
The square root of 165215 is about 406.4664807829. The cubic root of 165215 is about 54.8718780816.
Adding to 165215 its reverse (512561), we get a palindrome (677776).
The spelling of 165215 in words is "one hundred sixty-five thousand, two hundred fifteen".
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