531666512 has 80 divisors (see below), whose sum is σ = 1208256000. Its totient is φ = 224404992.

The previous prime is 531666503. The next prime is 531666571. The reversal of 531666512 is 215666135.

It is a super-2 number, since 2×531666512² = 565338559964492288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112289 + ... + 116927.

It is an arithmetic number, because the mean of its divisors is an integer number (15103200).

Almost surely, 2^531666512 is an apocalyptic number.

531666512 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531666512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (604128000).

531666512 is an abundant number, since it is smaller than the sum of its proper divisors (676589488).

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

531666512 is a wasteful number, since it uses less digits than its factorization.

531666512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4708 (or 4702 counting only the distinct ones).

The product of its digits is 32400, while the sum is 35.

The square root of 531666512 is about 23057.8947868187. The cubic root of 531666512 is about 810.1145557636.

The spelling of 531666512 in words is "five hundred thirty-one million, six hundred sixty-six thousand, five hundred twelve".