523165 has 8 divisors (see below), whose sum is σ = 660960. Its totient is φ = 396432.

The previous prime is 523129. The next prime is 523169. The reversal of 523165 is 561325.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-523165 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523169) 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, 2659 + ... + 2848.

It is an arithmetic number, because the mean of its divisors is an integer number (82620).

2⁵²³¹⁶⁵ is an apocalyptic number.

It is an amenable number.

523165 is a deficient number, since it is larger than the sum of its proper divisors (137795).

523165 is a wasteful number, since it uses less digits than its factorization.

523165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5531.

The product of its digits is 900, while the sum is 22.

The square root of 523165 is about 723.3014585911. The cubic root of 523165 is about 80.5773339628.

The spelling of 523165 in words is "five hundred twenty-three thousand, one hundred sixty-five".