531329250 has 128 divisors (see below), whose sum is σ = 1398249216. Its totient is φ = 134208000.

The previous prime is 531329221. The next prime is 531329257. The reversal of 531329250 is 52923135.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (531329257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1137517 + ... + 1137983.

It is an arithmetic number, because the mean of its divisors is an integer number (10923822).

Almost surely, 2^531329250 is an apocalyptic number.

531329250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 531329250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (699124608).

531329250 is an abundant number, since it is smaller than the sum of its proper divisors (866919966).

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

531329250 is a wasteful number, since it uses less digits than its factorization.

531329250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565 (or 555 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 531329250 is about 23050.5802530001. The cubic root of 531329250 is about 809.9432211382.

The spelling of 531329250 in words is "five hundred thirty-one million, three hundred twenty-nine thousand, two hundred fifty".