5133521 has 4 divisors (see below), whose sum is σ = 5149092. Its totient is φ = 5117952.

The previous prime is 5133517. The next prime is 5133523. The reversal of 5133521 is 1253315.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1073296 + 4060225 = 1036^2 + 2015^2 .

It is a cyclic number.

It is not a de Polignac number, because 5133521 - 2² = 5133517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5133493 and 5133502.

It is not an unprimeable number, because it can be changed into a prime (5133523) by changing a digit.

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, 7280 + ... + 7953.

It is an arithmetic number, because the mean of its divisors is an integer number (1287273).

Almost surely, 2^5133521 is an apocalyptic number.

It is an amenable number.

5133521 is a deficient number, since it is larger than the sum of its proper divisors (15571).

5133521 is a wasteful number, since it uses less digits than its factorization.

5133521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15570.

The product of its digits is 450, while the sum is 20.

The square root of 5133521 is about 2265.7274769928. The cubic root of 5133521 is about 172.5063611741.

Adding to 5133521 its reverse (1253315), we get a palindrome (6386836).

The spelling of 5133521 in words is "five million, one hundred thirty-three thousand, five hundred twenty-one".