522530424952812 has 144 divisors (see below), whose sum is σ = 1381036386038400. Its totient is φ = 172745606085120.

The previous prime is 522530424952807. The next prime is 522530424952813. The reversal of 522530424952812 is 218259424035225.

522530424952812 is a `hidden beast` number, since 5 + 2 + 2 + 5 + 30 + 42 + 49 + 528 + 1 + 2 = 666.

It is a super-2 number, since 2×522530424952812² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (522530424952813) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 129198364 + ... + 133181372.

It is an arithmetic number, because the mean of its divisors is an integer number (9590530458600).

Almost surely, 2^{522530424952812} 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 522530424952812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (690518193019200).

522530424952812 is an abundant number, since it is smaller than the sum of its proper divisors (858505961085588).

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

522530424952812 is a wasteful number, since it uses less digits than its factorization.

522530424952812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3984138 (or 3984124 counting only the distinct ones).

The product of its (nonzero) digits is 13824000, while the sum is 54.

The spelling of 522530424952812 in words is "five hundred twenty-two trillion, five hundred thirty billion, four hundred twenty-four million, nine hundred fifty-two thousand, eight hundred twelve".