531823572 has 72 divisors (see below), whose sum is σ = 1603195776. Its totient is φ = 145341504.

The previous prime is 531823543. The next prime is 531823573. The reversal of 531823572 is 275328135.

It is a happy number.

531823572 is a `hidden beast` number, since 5 + 3 + 1 + 82 + 3 + 572 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531823573) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40083 + ... + 51674.

It is an arithmetic number, because the mean of its divisors is an integer number (22266608).

Almost surely, 2^531823572 is an apocalyptic number.

It is an amenable number.

531823572 is an abundant number, since it is smaller than the sum of its proper divisors (1071372204).

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

531823572 is a wasteful number, since it uses less digits than its factorization.

531823572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91797 (or 91792 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 531823572 is about 23061.3003102600. The cubic root of 531823572 is about 810.1943200910.

The spelling of 531823572 in words is "five hundred thirty-one million, eight hundred twenty-three thousand, five hundred seventy-two".