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52165 = 510433
BaseRepresentation
bin1100101111000101
32122120001
430233011
53132130
61041301
7305041
oct145705
978501
1052165
1136213
1226231
131a989
1415021
15106ca
hexcbc5

52165 has 4 divisors (see below), whose sum is σ = 62604. Its totient is φ = 41728.

The previous prime is 52163. The next prime is 52177. The reversal of 52165 is 56125.

52165 = 1612 + 1622.

It is a happy number.

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 26244 + 25921 = 162^2 + 161^2 .

It is a cyclic number.

It is not a de Polignac number, because 52165 - 21 = 52163 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

52165 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5212 + ... + 5221.

It is an arithmetic number, because the mean of its divisors is an integer number (15651).

252165 is an apocalyptic number.

52165 is the 162-nd centered square number.

It is an amenable number.

52165 is a deficient number, since it is larger than the sum of its proper divisors (10439).

52165 is a wasteful number, since it uses less digits than its factorization.

52165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10438.

The product of its digits is 300, while the sum is 19.

The square root of 52165 is about 228.3965849132. The cubic root of 52165 is about 37.3645483689.

The spelling of 52165 in words is "fifty-two thousand, one hundred sixty-five".

Divisors: 1 5 10433 52165