531633256 has 48 divisors (see below), whose sum is σ = 1244118240. Its totient is φ = 206906880.

The previous prime is 531633251. The next prime is 531633257. The reversal of 531633256 is 652336135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531633251) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 571800 + ... + 572728.

It is an arithmetic number, because the mean of its divisors is an integer number (25919130).

Almost surely, 2^531633256 is an apocalyptic number.

531633256 is a gapful number since it is divisible by the number (56) 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 531633256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (622059120).

531633256 is an abundant number, since it is smaller than the sum of its proper divisors (712484984).

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

531633256 is an equidigital number, since it uses as much as digits as its factorization.

531633256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882 (or 949 counting only the distinct ones).

The product of its digits is 48600, while the sum is 34.

The square root of 531633256 is about 23057.1736342510. The cubic root of 531633256 is about 810.0976643911.

The spelling of 531633256 in words is "five hundred thirty-one million, six hundred thirty-three thousand, two hundred fifty-six".