531012520 has 32 divisors (see below), whose sum is σ = 1212616800. Its totient is φ = 209233728.

The previous prime is 531012509. The next prime is 531012529. The reversal of 531012520 is 25210135.

It is not an unprimeable number, because it can be changed into a prime (531012529) 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 7 ways as a sum of consecutive naturals, for example, 96390 + ... + 101749.

It is an arithmetic number, because the mean of its divisors is an integer number (37894275).

Almost surely, 2^531012520 is an apocalyptic number.

It is an amenable number.

531012520 is an abundant number, since it is smaller than the sum of its proper divisors (681604280).

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

531012520 is a wasteful number, since it uses less digits than its factorization.

531012520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198217 (or 198213 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 531012520 is about 23043.7089028654. The cubic root of 531012520 is about 809.7822510760.

Adding to 531012520 its reverse (25210135), we get a palindrome (556222655).

The spelling of 531012520 in words is "five hundred thirty-one million, twelve thousand, five hundred twenty".