531330021054 has 192 divisors, whose sum is σ = 1349640938880. Its totient is φ = 147942236160.

The previous prime is 531330021037. The next prime is 531330021059. The reversal of 531330021054 is 450120033135.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531330021059) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 543837814 + ... + 543838790.

It is an arithmetic number, because the mean of its divisors is an integer number (7029379890).

Almost surely, 2^531330021054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531330021054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (674820469440).

531330021054 is an abundant number, since it is smaller than the sum of its proper divisors (818310917826).

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

531330021054 is a wasteful number, since it uses less digits than its factorization.

531330021054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635 (or 1632 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 531330021054 its reverse (450120033135), we get a palindrome (981450054189).

The spelling of 531330021054 in words is "five hundred thirty-one billion, three hundred thirty million, twenty-one thousand, fifty-four".