531533172 has 24 divisors (see below), whose sum is σ = 1255945600. Its totient is φ = 174934656.

The previous prime is 531533153. The next prime is 531533173. The reversal of 531533172 is 271335135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531533173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279397 + ... + 281292.

Almost surely, 2^531533172 is an apocalyptic number.

It is an amenable number.

531533172 is an abundant number, since it is smaller than the sum of its proper divisors (724412428).

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

531533172 is a wasteful number, since it uses less digits than its factorization.

531533172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560775 (or 560773 counting only the distinct ones).

The product of its digits is 9450, while the sum is 30.

The square root of 531533172 is about 23055.0031880284. The cubic root of 531533172 is about 810.0468255204.

The spelling of 531533172 in words is "five hundred thirty-one million, five hundred thirty-three thousand, one hundred seventy-two".