531505132752 has 80 divisors (see below), whose sum is σ = 1498906920960. Its totient is φ = 160951536000.

The previous prime is 531505132747. The next prime is 531505132777. The reversal of 531505132752 is 257231505135.

It is a super-2 number, since 2×531505132752² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 531505132752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 425377 + ... + 1115327.

It is an arithmetic number, because the mean of its divisors is an integer number (18736336512).

Almost surely, 2^531505132752 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531505132752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (749453460480).

531505132752 is an abundant number, since it is smaller than the sum of its proper divisors (967401788208).

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

531505132752 is a wasteful number, since it uses less digits than its factorization.

531505132752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691432 (or 691426 counting only the distinct ones).

The product of its (nonzero) digits is 157500, while the sum is 39.

Adding to 531505132752 its reverse (257231505135), we get a palindrome (788736637887).

The spelling of 531505132752 in words is "five hundred thirty-one billion, five hundred five million, one hundred thirty-two thousand, seven hundred fifty-two".