5239521 has 27 divisors (see below), whose sum is σ = 8885331. Its totient is φ = 2966544.

The previous prime is 5239511. The next prime is 5239523. The reversal of 5239521 is 1259325.

The square root of 5239521 is 2289.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3651921 + 1587600 = 1911^2 + 1260^2 .

It is not a de Polignac number, because 5239521 - 2⁷ = 5239393 is a prime.

It is a d-powerful number, because it can be written as 5³ + 2⁸ + 3¹⁴ + 9 + 5⁸ + 2¹⁶ + 1 .

It is a Curzon number.

5239521 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5239523) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 48015 + ... + 48123.

Almost surely, 2^5239521 is an apocalyptic number.

5239521 is the 2289-th square number.

5239521 is the 1145-th centered octagonal number.

It is an amenable number.

5239521 is a deficient number, since it is larger than the sum of its proper divisors (3645810).

5239521 is a wasteful number, since it uses less digits than its factorization.

5239521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238 (or 119 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The cubic root of 5239521 is about 173.6856194028.

The spelling of 5239521 in words is "five million, two hundred thirty-nine thousand, five hundred twenty-one".