2233555561 has 2 divisors, whose sum is σ = 2233555562. Its totient is φ = 2233555560.

The previous prime is 2233555543. The next prime is 2233555567. The reversal of 2233555561 is 1655553322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2233507600 + 47961 = 47260^2 + 219^2 .

It is a cyclic number.

It is not a de Polignac number, because 2233555561 - 2¹⁷ = 2233424489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2233555561.

It is not a weakly prime, because it can be changed into another prime (2233555567) 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, 1116777780 + 1116777781.

It is an arithmetic number, because the mean of its divisors is an integer number (1116777781).

Almost surely, 2^2233555561 is an apocalyptic number.

It is an amenable number.

2233555561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2233555561 is an equidigital number, since it uses as much as digits as its factorization.

2233555561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 135000, while the sum is 37.

The square root of 2233555561 is about 47260.5074136958. The cubic root of 2233555561 is about 1307.1705457751.

The spelling of 2233555561 in words is "two billion, two hundred thirty-three million, five hundred fifty-five thousand, five hundred sixty-one".