5603521 has 16 divisors (see below), whose sum is σ = 7106688. Its totient is φ = 4291200.

The previous prime is 5603519. The next prime is 5603551. The reversal of 5603521 is 1253065.

5603521 = 109² + 110² + ... + 262².

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 5603521 - 2¹ = 5603519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5603492 and 5603501.

It is not an unprimeable number, because it can be changed into a prime (5603501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4101 + ... + 5293.

It is an arithmetic number, because the mean of its divisors is an integer number (444168).

Almost surely, 2^5603521 is an apocalyptic number.

It is an amenable number.

5603521 is a deficient number, since it is larger than the sum of its proper divisors (1503167).

5603521 is a wasteful number, since it uses less digits than its factorization.

5603521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 5603521 is about 2367.1757433701. The cubic root of 5603521 is about 177.6180105270.

Adding to 5603521 its reverse (1253065), we get a palindrome (6856586).

The spelling of 5603521 in words is "five million, six hundred three thousand, five hundred twenty-one".