531785088 has 224 divisors, whose sum is σ = 1638844200. Its totient is φ = 171694080.

The previous prime is 531785087. The next prime is 531785117. The reversal of 531785088 is 880587135.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531785087) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 3825723 + ... + 3825861.

Almost surely, 2^531785088 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 531785088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (819422100).

531785088 is an abundant number, since it is smaller than the sum of its proper divisors (1107059112).

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

531785088 is an equidigital number, since it uses as much as digits as its factorization.

531785088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 45.

The square root of 531785088 is about 23060.4659102976. The cubic root of 531785088 is about 810.1747770997.

The spelling of 531785088 in words is "five hundred thirty-one million, seven hundred eighty-five thousand, eighty-eight".