2003145533 has 2 divisors, whose sum is σ = 2003145534. Its totient is φ = 2003145532.

The previous prime is 2003145527. The next prime is 2003145611. The reversal of 2003145533 is 3355413002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1046975449 + 956170084 = 32357^2 + 30922^2 .

It is a cyclic number.

It is not a de Polignac number, because 2003145533 - 2¹⁰ = 2003144509 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2003145523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001572766 + 1001572767.

It is an arithmetic number, because the mean of its divisors is an integer number (1001572767).

Almost surely, 2^2003145533 is an apocalyptic number.

It is an amenable number.

2003145533 is a deficient number, since it is larger than the sum of its proper divisors (1).

2003145533 is an equidigital number, since it uses as much as digits as its factorization.

2003145533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 2003145533 is about 44756.5138611130. The cubic root of 2003145533 is about 1260.5812244556.

Adding to 2003145533 its reverse (3355413002), we get a palindrome (5358558535).

The spelling of 2003145533 in words is "two billion, three million, one hundred forty-five thousand, five hundred thirty-three".