531403552 has 72 divisors (see below), whose sum is σ = 1114987356. Its totient is φ = 249260544.

The previous prime is 531403549. The next prime is 531403559. The reversal of 531403552 is 255304135.

It can be written as a sum of positive squares in 2 ways, for example, as 516380176 + 15023376 = 22724^2 + 3876^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 531403552.

It is not an unprimeable number, because it can be changed into a prime (531403559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1813518 + ... + 1813810.

Almost surely, 2^531403552 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 531403552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (557493678).

531403552 is an abundant number, since it is smaller than the sum of its proper divisors (583583804).

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

531403552 is a wasteful number, since it uses less digits than its factorization.

531403552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 531403552 is about 23052.1919131349. The cubic root of 531403552 is about 809.9809739981.

Adding to 531403552 its reverse (255304135), we get a palindrome (786707687).

The spelling of 531403552 in words is "five hundred thirty-one million, four hundred three thousand, five hundred fifty-two".