531611272 has 8 divisors (see below), whose sum is σ = 996771150. Its totient is φ = 265805632.

The previous prime is 531611243. The next prime is 531611273. The reversal of 531611272 is 272116135.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 322346116 + 209265156 = 17954^2 + 14466^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×531611272² = 565221089034915968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 531611272.

It is not an unprimeable number, because it can be changed into a prime (531611273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33225697 + ... + 33225712.

Almost surely, 2^531611272 is an apocalyptic number.

It is an amenable number.

531611272 is a deficient number, since it is larger than the sum of its proper divisors (465159878).

531611272 is a wasteful number, since it uses less digits than its factorization.

531611272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66451415 (or 66451411 counting only the distinct ones).

The product of its digits is 2520, while the sum is 28.

The square root of 531611272 is about 23056.6969013343. The cubic root of 531611272 is about 810.0864979009.

The spelling of 531611272 in words is "five hundred thirty-one million, six hundred eleven thousand, two hundred seventy-two".