531608 has 32 divisors (see below), whose sum is σ = 1244160. Its totient is φ = 206880.

The previous prime is 531589. The next prime is 531611. The reversal of 531608 is 806135.

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

531608 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185 + ... + 1047.

It is an arithmetic number, because the mean of its divisors is an integer number (38880).

2⁵³¹⁶⁰⁸ 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 531608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (622080).

531608 is an abundant number, since it is smaller than the sum of its proper divisors (712552).

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

531608 is a wasteful number, since it uses less digits than its factorization.

531608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887 (or 883 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 531608 is about 729.1145314695. The cubic root of 531608 is about 81.0084835904.

It can be divided in two parts, 53 and 1608, that added together give a palindrome (1661).

The spelling of 531608 in words is "five hundred thirty-one thousand, six hundred eight".