531353052520 has 32 divisors (see below), whose sum is σ = 1195597165320. Its totient is φ = 212531834880.

The previous prime is 531353052473. The next prime is 531353052533. The reversal of 531353052520 is 25250353135.

It can be written as a sum of positive squares in 4 ways, for example, as 114551110116 + 416801942404 = 338454^2 + 645602^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662200 + ... + 1225240.

Almost surely, 2^531353052520 is an apocalyptic number.

It is an amenable number.

531353052520 is an abundant number, since it is smaller than the sum of its proper divisors (664244112800).

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

531353052520 is a wasteful number, since it uses less digits than its factorization.

531353052520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586645 (or 586641 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 34.

The spelling of 531353052520 in words is "five hundred thirty-one billion, three hundred fifty-three million, fifty-two thousand, five hundred twenty".