565555554541 has 2 divisors, whose sum is σ = 565555554542. Its totient is φ = 565555554540.

The previous prime is 565555554527. The next prime is 565555554607. The reversal of 565555554541 is 145455555565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 525733755625 + 39821798916 = 725075^2 + 199554^2 .

It is a cyclic number.

It is not a de Polignac number, because 565555554541 - 2¹⁹ = 565555030253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (565555554241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282777777270 + 282777777271.

It is an arithmetic number, because the mean of its divisors is an integer number (282777777271).

Almost surely, 2^565555554541 is an apocalyptic number.

It is an amenable number.

565555554541 is a deficient number, since it is larger than the sum of its proper divisors (1).

565555554541 is an equidigital number, since it uses as much as digits as its factorization.

565555554541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37500000, while the sum is 55.

The spelling of 565555554541 in words is "five hundred sixty-five billion, five hundred fifty-five million, five hundred fifty-four thousand, five hundred forty-one".