5613521 has 4 divisors (see below), whose sum is σ = 5744112. Its totient is φ = 5482932.

The previous prime is 5613499. The next prime is 5613533. The reversal of 5613521 is 1253165.

5613521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5613521 - 2⁶ = 5613457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5613551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65231 + ... + 65316.

It is an arithmetic number, because the mean of its divisors is an integer number (1436028).

Almost surely, 2^5613521 is an apocalyptic number.

It is an amenable number.

5613521 is a deficient number, since it is larger than the sum of its proper divisors (130591).

5613521 is a wasteful number, since it uses less digits than its factorization.

5613521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130590.

The product of its digits is 900, while the sum is 23.

The square root of 5613521 is about 2369.2870235579. The cubic root of 5613521 is about 177.7236063102.

Adding to 5613521 its reverse (1253165), we get a palindrome (6866686).

The spelling of 5613521 in words is "five million, six hundred thirteen thousand, five hundred twenty-one".