5221520 has 20 divisors (see below), whose sum is σ = 12140220. Its totient is φ = 2088576.

The previous prime is 5221501. The next prime is 5221543. The reversal of 5221520 is 251225.

It can be written as a sum of positive squares in 2 ways, for example, as 1364224 + 3857296 = 1168^2 + 1964^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×5221520² = 54528542220800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32555 + ... + 32714.

It is an arithmetic number, because the mean of its divisors is an integer number (607011).

Almost surely, 2^5221520 is an apocalyptic number.

It is an amenable number.

5221520 is an abundant number, since it is smaller than the sum of its proper divisors (6918700).

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

5221520 is a wasteful number, since it uses less digits than its factorization.

5221520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65282 (or 65276 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 5221520 is about 2285.0645505106. The cubic root of 5221520 is about 173.4864852842.

Adding to 5221520 its reverse (251225), we get a palindrome (5472745).

The spelling of 5221520 in words is "five million, two hundred twenty-one thousand, five hundred twenty".