522165 has 16 divisors (see below), whose sum is σ = 955008. Its totient is φ = 238656.

The previous prime is 522161. The next prime is 522167. The reversal of 522165 is 561225.

It is not a de Polignac number, because 522165 - 2² = 522161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

522165 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 522165.

It is not an unprimeable number, because it can be changed into a prime (522161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2382 + ... + 2591.

It is an arithmetic number, because the mean of its divisors is an integer number (59688).

2⁵²²¹⁶⁵ is an apocalyptic number.

It is an amenable number.

522165 is a deficient number, since it is larger than the sum of its proper divisors (432843).

522165 is a wasteful number, since it uses less digits than its factorization.

522165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4988.

The product of its digits is 600, while the sum is 21.

The square root of 522165 is about 722.6098532403. The cubic root of 522165 is about 80.5259615607.

Subtracting 522165 from its reverse (561225), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 522165 in words is "five hundred twenty-two thousand, one hundred sixty-five".