522221740 has 48 divisors (see below), whose sum is σ = 1113285600. Its totient is φ = 205742592.

The previous prime is 522221723. The next prime is 522221741. The reversal of 522221740 is 47122225.

522221740 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (522221741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 706291 + ... + 707029.

It is an arithmetic number, because the mean of its divisors is an integer number (23193450).

Almost surely, 2^522221740 is an apocalyptic number.

It is an amenable number.

522221740 is an abundant number, since it is smaller than the sum of its proper divisors (591063860).

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

522221740 is a wasteful number, since it uses less digits than its factorization.

522221740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234 (or 1232 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 522221740 is about 22852.1714504333. The cubic root of 522221740 is about 805.2887818511.

Adding to 522221740 its reverse (47122225), we get a palindrome (569343965).

It can be divided in two parts, 5222 and 21740, that added together give a palindrome (26962).

The spelling of 522221740 in words is "five hundred twenty-two million, two hundred twenty-one thousand, seven hundred forty".