531541530 has 96 divisors (see below), whose sum is σ = 1566714240. Its totient is φ = 123949440.

The previous prime is 531541529. The next prime is 531541541. The reversal of 531541530 is 35145135.

It is a super-2 number, since 2×531541530² = 565072796229481800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 531541494 and 531541503.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10275 + ... + 34185.

It is an arithmetic number, because the mean of its divisors is an integer number (16319940).

Almost surely, 2^531541530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531541530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (783357120).

531541530 is an abundant number, since it is smaller than the sum of its proper divisors (1035172710).

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

531541530 is a wasteful number, since it uses less digits than its factorization.

531541530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23956 (or 23953 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 531541530 is about 23055.1844494899. The cubic root of 531541530 is about 810.0510713112.

Adding to 531541530 its reverse (35145135), we get a palindrome (566686665).

The spelling of 531541530 in words is "five hundred thirty-one million, five hundred forty-one thousand, five hundred thirty".