3303506561 has 2 divisors, whose sum is σ = 3303506562. Its totient is φ = 3303506560.

The previous prime is 3303506471. The next prime is 3303506567. The reversal of 3303506561 is 1656053033.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3167550961 + 135955600 = 56281^2 + 11660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3303506561 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3303506567) 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 as a sum of consecutive naturals, namely, 1651753280 + 1651753281.

It is an arithmetic number, because the mean of its divisors is an integer number (1651753281).

Almost surely, 2^3303506561 is an apocalyptic number.

It is an amenable number.

3303506561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3303506561 is an equidigital number, since it uses as much as digits as its factorization.

3303506561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24300, while the sum is 32.

The square root of 3303506561 is about 57476.1390578734. The cubic root of 3303506561 is about 1489.3326983536.

Adding to 3303506561 its reverse (1656053033), we get a palindrome (4959559594).

The spelling of 3303506561 in words is "three billion, three hundred three million, five hundred six thousand, five hundred sixty-one".