531245555020 has 48 divisors (see below), whose sum is σ = 1129805016480. Its totient is φ = 209802492416.

The previous prime is 531245554999. The next prime is 531245555033. The reversal of 531245555020 is 20555542135.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 997254 + ... + 1434226.

It is an arithmetic number, because the mean of its divisors is an integer number (23537604510).

Almost surely, 2^531245555020 is an apocalyptic number.

It is an amenable number.

531245555020 is an abundant number, since it is smaller than the sum of its proper divisors (598559461460).

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

531245555020 is a wasteful number, since it uses less digits than its factorization.

531245555020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437754 (or 437752 counting only the distinct ones).

The product of its (nonzero) digits is 150000, while the sum is 37.

The spelling of 531245555020 in words is "five hundred thirty-one billion, two hundred forty-five million, five hundred fifty-five thousand, twenty".