531575540 has 48 divisors (see below), whose sum is σ = 1226171520. Its totient is φ = 192677760.

The previous prime is 531575501. The next prime is 531575557. The reversal of 531575540 is 45575135.

It is a self number, because there is not a number n which added to its sum of digits gives 531575540.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 21671 + ... + 39150.

It is an arithmetic number, because the mean of its divisors is an integer number (25545240).

Almost surely, 2^531575540 is an apocalyptic number.

It is an amenable number.

531575540 is an abundant number, since it is smaller than the sum of its proper divisors (694595980).

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

531575540 is a wasteful number, since it uses less digits than its factorization.

531575540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60872 (or 60870 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 35.

The square root of 531575540 is about 23055.9220158293. The cubic root of 531575540 is about 810.0683476341.

The spelling of 531575540 in words is "five hundred thirty-one million, five hundred seventy-five thousand, five hundred forty".