531506036 has 54 divisors (see below), whose sum is σ = 997565814. Its totient is φ = 247752000.

The previous prime is 531505987. The next prime is 531506039. The reversal of 531506036 is 630605135.

It can be written as a sum of positive squares in 3 ways, for example, as 439153936 + 92352100 = 20956^2 + 9610^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531506039) 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 17 ways as a sum of consecutive naturals, for example, 5262386 + ... + 5262486.

It is an arithmetic number, because the mean of its divisors is an integer number (18473441).

Almost surely, 2^531506036 is an apocalyptic number.

It is an amenable number.

531506036 is a deficient number, since it is larger than the sum of its proper divisors (466059778).

531506036 is a wasteful number, since it uses less digits than its factorization.

531506036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 531506036 is about 23054.4146748513. The cubic root of 531506036 is about 810.0330403634.

Subtracting 531506036 from its reverse (630605135), we obtain a palindrome (99099099).

The spelling of 531506036 in words is "five hundred thirty-one million, five hundred six thousand, thirty-six".