550555555601 has 4 divisors (see below), whose sum is σ = 550558795572. Its totient is φ = 550552315632.

The previous prime is 550555555559. The next prime is 550555555609. The reversal of 550555555601 is 106555555055.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 331774848001 + 218780707600 = 575999^2 + 467740^2 .

It is a cyclic number.

It is not a de Polignac number, because 550555555601 - 2¹⁴ = 550555539217 is a prime.

It is a super-2 number, since 2×550555555601² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550555555609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1350110 + ... + 1709943.

It is an arithmetic number, because the mean of its divisors is an integer number (137639698893).

Almost surely, 2^550555555601 is an apocalyptic number.

It is an amenable number.

550555555601 is a deficient number, since it is larger than the sum of its proper divisors (3239971).

550555555601 is a wasteful number, since it uses less digits than its factorization.

550555555601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3239970.

The product of its (nonzero) digits is 2343750, while the sum is 47.

The spelling of 550555555601 in words is "five hundred fifty billion, five hundred fifty-five million, five hundred fifty-five thousand, six hundred one".