3030808561 has 4 divisors (see below), whose sum is σ = 3306336624. Its totient is φ = 2755280500.

The previous prime is 3030808549. The next prime is 3030808591. The reversal of 3030808561 is 1658080303.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3030808561 - 2¹³ = 3030800369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3030808511) 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 in 3 ways as a sum of consecutive naturals, for example, 137764015 + ... + 137764036.

It is an arithmetic number, because the mean of its divisors is an integer number (826584156).

Almost surely, 2^3030808561 is an apocalyptic number.

It is an amenable number.

3030808561 is a deficient number, since it is larger than the sum of its proper divisors (275528063).

3030808561 is a wasteful number, since it uses less digits than its factorization.

3030808561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275528062.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 3030808561 is about 55052.7797754119. The cubic root of 3030808561 is about 1447.1698360551.

Adding to 3030808561 its reverse (1658080303), we get a palindrome (4688888864).

The spelling of 3030808561 in words is "three billion, thirty million, eight hundred eight thousand, five hundred sixty-one".