531432256 has 56 divisors (see below), whose sum is σ = 1093638656. Its totient is φ = 255951360.

The previous prime is 531432247. The next prime is 531432263. The reversal of 531432256 is 652234135.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549085 + ... + 550051.

Almost surely, 2^531432256 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 531432256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (546819328).

531432256 is an abundant number, since it is smaller than the sum of its proper divisors (562206400).

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

531432256 is a wasteful number, since it uses less digits than its factorization.

531432256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287 (or 1277 counting only the distinct ones).

The product of its digits is 21600, while the sum is 31.

The square root of 531432256 is about 23052.8144919444. The cubic root of 531432256 is about 809.9955575634.

The spelling of 531432256 in words is "five hundred thirty-one million, four hundred thirty-two thousand, two hundred fifty-six".