5215523220 has 72 divisors (see below), whose sum is σ = 15826716360. Its totient is φ = 1390252800.

The previous prime is 5215523167. The next prime is 5215523231. The reversal of 5215523220 is 223255125.

It can be written as a sum of positive squares in 4 ways, for example, as 22014864 + 5193508356 = 4692^2 + 72066^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 662266 + ... + 670094.

It is an arithmetic number, because the mean of its divisors is an integer number (219815505).

Almost surely, 2^5215523220 is an apocalyptic number.

It is an amenable number.

5215523220 is an abundant number, since it is smaller than the sum of its proper divisors (10611193140).

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

5215523220 is a wasteful number, since it uses less digits than its factorization.

5215523220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11545 (or 11540 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 5215523220 is about 72218.5794653980. The cubic root of 5215523220 is about 1734.2004493631.

Adding to 5215523220 its reverse (223255125), we get a palindrome (5438778345).

The spelling of 5215523220 in words is "five billion, two hundred fifteen million, five hundred twenty-three thousand, two hundred twenty".