522130640 has 80 divisors (see below), whose sum is σ = 1282417920. Its totient is φ = 197153280.

The previous prime is 522130541. The next prime is 522130657. The reversal of 522130640 is 46031225.

522130640 = T₁₇₁ + T₁₇₂ + ... + T₁₄₆₃.

It is a tau number, because it is divible by the number of its divisors (80).

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, 654722 + ... + 655518.

It is an arithmetic number, because the mean of its divisors is an integer number (16030224).

Almost surely, 2^522130640 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 522130640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (641208960).

522130640 is an abundant number, since it is smaller than the sum of its proper divisors (760287280).

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

522130640 is a wasteful number, since it uses less digits than its factorization.

522130640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260 (or 1254 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 522130640 is about 22850.1781174677. The cubic root of 522130640 is about 805.2419523987.

Adding to 522130640 its reverse (46031225), we get a palindrome (568161865).

The spelling of 522130640 in words is "five hundred twenty-two million, one hundred thirty thousand, six hundred forty".