5221365520 has 80 divisors (see below), whose sum is σ = 14157129600. Its totient is φ = 1790173056.

The previous prime is 5221365517. The next prime is 5221365521. The reversal of 5221365520 is 255631225.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (5221365521) 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, 67702 + ... + 122581.

It is an arithmetic number, because the mean of its divisors is an integer number (176964120).

Almost surely, 2^5221365520 is an apocalyptic number.

It is an amenable number.

5221365520 is an abundant number, since it is smaller than the sum of its proper divisors (8935764080).

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

5221365520 is a wasteful number, since it uses less digits than its factorization.

5221365520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190317 (or 190297 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 5221365520 is about 72259.0168767885. The cubic root of 5221365520 is about 1734.8477438665.

Adding to 5221365520 its reverse (255631225), we get a palindrome (5476996745).

The spelling of 5221365520 in words is "five billion, two hundred twenty-one million, three hundred sixty-five thousand, five hundred twenty".