521108 has 24 divisors (see below), whose sum is σ = 1072512. Its totient is φ = 216864.

The previous prime is 521107. The next prime is 521119. The reversal of 521108 is 801125.

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 521108.

It is not an unprimeable number, because it can be changed into a prime (521107) 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, 785 + ... + 1287.

It is an arithmetic number, because the mean of its divisors is an integer number (44688).

2⁵²¹¹⁰⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 521108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (536256).

521108 is an abundant number, since it is smaller than the sum of its proper divisors (551404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

521108 is a wasteful number, since it uses less digits than its factorization.

521108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 549 counting only the distinct ones).

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

The square root of 521108 is about 721.8781060539. The cubic root of 521108 is about 80.4715895784.

Adding to 521108 its sum of digits (17), we get a palindrome (521125).

The spelling of 521108 in words is "five hundred twenty-one thousand, one hundred eight".