531445113 has 6 divisors (see below), whose sum is σ = 767642954. Its totient is φ = 354296736.

The previous prime is 531445091. The next prime is 531445147. The reversal of 531445113 is 311544135.

It is a happy number.

531445113 is a `hidden beast` number, since 5 + 3 + 144 + 511 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 269879184 + 261565929 = 16428^2 + 16173^2 .

It is not a de Polignac number, because 531445113 - 2⁶ = 531445049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531445513) 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 in 5 ways as a sum of consecutive naturals, for example, 29524720 + ... + 29524737.

Almost surely, 2^531445113 is an apocalyptic number.

It is an amenable number.

531445113 is a deficient number, since it is larger than the sum of its proper divisors (236197841).

531445113 is a wasteful number, since it uses less digits than its factorization.

531445113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59049463 (or 59049460 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 531445113 is about 23053.0933499173. The cubic root of 531445113 is about 810.0020896151.

Adding to 531445113 its reverse (311544135), we get a palindrome (842989248).

The spelling of 531445113 in words is "five hundred thirty-one million, four hundred forty-five thousand, one hundred thirteen".