5521603 has 2 divisors, whose sum is σ = 5521604. Its totient is φ = 5521602.

The previous prime is 5521597. The next prime is 5521631. The reversal of 5521603 is 3061255.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5521603 - 2¹⁷ = 5390531 is a prime.

It is an Ulam number.

5521603 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (5521643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2760801 + 2760802.

It is an arithmetic number, because the mean of its divisors is an integer number (2760802).

Almost surely, 2^5521603 is an apocalyptic number.

5521603 is a deficient number, since it is larger than the sum of its proper divisors (1).

5521603 is an equidigital number, since it uses as much as digits as its factorization.

5521603 is an evil number, because the sum of its binary digits is even.

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

The square root of 5521603 is about 2349.8091411857. The cubic root of 5521603 is about 176.7482242792.

Adding to 5521603 its reverse (3061255), we get a palindrome (8582858).

The spelling of 5521603 in words is "five million, five hundred twenty-one thousand, six hundred three".