2520521603 has 2 divisors, whose sum is σ = 2520521604. Its totient is φ = 2520521602.

The previous prime is 2520521587. The next prime is 2520521683. The reversal of 2520521603 is 3061250252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2520521603 - 2⁴ = 2520521587 is a prime.

It is not a weakly prime, because it can be changed into another prime (2520521683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260260801 + 1260260802.

It is an arithmetic number, because the mean of its divisors is an integer number (1260260802).

Almost surely, 2^2520521603 is an apocalyptic number.

2520521603 is a deficient number, since it is larger than the sum of its proper divisors (1).

2520521603 is an equidigital number, since it uses as much as digits as its factorization.

2520521603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 2520521603 is about 50204.7966134711. The cubic root of 2520521603 is about 1360.9123065246.

Adding to 2520521603 its reverse (3061250252), we get a palindrome (5581771855).

The spelling of 2520521603 in words is "two billion, five hundred twenty million, five hundred twenty-one thousand, six hundred three".