108521 has 8 divisors (see below), whose sum is σ = 127680. Its totient is φ = 90288.

The previous prime is 108517. The next prime is 108529. The reversal of 108521 is 125801.

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 108521 - 2² = 108517 is a prime.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 108521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50 + ... + 468.

It is an arithmetic number, because the mean of its divisors is an integer number (15960).

2¹⁰⁸⁵²¹ is an apocalyptic number.

It is an amenable number.

108521 is a deficient number, since it is larger than the sum of its proper divisors (19159).

108521 is an equidigital number, since it uses as much as digits as its factorization.

108521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 108521 is about 329.4252570766. The cubic root of 108521 is about 47.6984861522.

The spelling of 108521 in words is "one hundred eight thousand, five hundred twenty-one".