550505555001 has 24 divisors (see below), whose sum is σ = 837110339520. Its totient is φ = 347652681696.

The previous prime is 550505554999. The next prime is 550505555023. The reversal of 550505555001 is 100555505055.

It is a happy number.

550505555001 is a `hidden beast` number, since 5 + 5 + 0 + 50 + 55 + 550 + 0 + 1 = 666.

It is not a de Polignac number, because 550505555001 - 2¹ = 550505554999 is a prime.

It is a super-2 number, since 2×550505555001² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (550505555101) 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 in 23 ways as a sum of consecutive naturals, for example, 1595151 + ... + 1909323.

It is an arithmetic number, because the mean of its divisors is an integer number (34879597480).

Almost surely, 2^550505555001 is an apocalyptic number.

It is an amenable number.

550505555001 is a deficient number, since it is larger than the sum of its proper divisors (286604784519).

550505555001 is a wasteful number, since it uses less digits than its factorization.

550505555001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324445 (or 324442 counting only the distinct ones).

The product of its (nonzero) digits is 78125, while the sum is 36.

The spelling of 550505555001 in words is "five hundred fifty billion, five hundred five million, five hundred fifty-five thousand, one".