531648481 has 72 divisors (see below), whose sum is σ = 734342400. Its totient is φ = 382112640.

The previous prime is 531648479. The next prime is 531648487. The reversal of 531648481 is 184846135.

It is not a de Polignac number, because 531648481 - 2¹ = 531648479 is a prime.

It is a super-2 number, since 2×531648481² = 565300214699214722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (531648487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4877455 + ... + 4877563.

It is an arithmetic number, because the mean of its divisors is an integer number (10199200).

Almost surely, 2^531648481 is an apocalyptic number.

It is an amenable number.

531648481 is a deficient number, since it is larger than the sum of its proper divisors (202693919).

531648481 is a wasteful number, since it uses less digits than its factorization.

531648481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 179 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The square root of 531648481 is about 23057.5037894391. The cubic root of 531648481 is about 810.1053975536.

The spelling of 531648481 in words is "five hundred thirty-one million, six hundred forty-eight thousand, four hundred eighty-one".