522322540 has 24 divisors (see below), whose sum is σ = 1154608560. Its totient is φ = 197932608.

The previous prime is 522322531. The next prime is 522322561. The reversal of 522322540 is 45223225.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 686887 + ... + 687646.

It is an arithmetic number, because the mean of its divisors is an integer number (48108690).

Almost surely, 2^522322540 is an apocalyptic number.

It is an amenable number.

522322540 is an abundant number, since it is smaller than the sum of its proper divisors (632286020).

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

522322540 is a wasteful number, since it uses less digits than its factorization.

522322540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374561 (or 1374559 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 522322540 is about 22854.3768237071. The cubic root of 522322540 is about 805.3405911885.

Adding to 522322540 its reverse (45223225), we get a palindrome (567545765).

The spelling of 522322540 in words is "five hundred twenty-two million, three hundred twenty-two thousand, five hundred forty".