550550505551 has 8 divisors (see below), whose sum is σ = 566059679808. Its totient is φ = 535140432000.

The previous prime is 550550505493. The next prime is 550550505587. The reversal of 550550505551 is 155505055055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 550550505551 - 2⁶ = 550550505487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 550550505499 and 550550505508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550550504551) 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 7 ways as a sum of consecutive naturals, for example, 24763910 + ... + 24786131.

It is an arithmetic number, because the mean of its divisors is an integer number (70757459976).

Almost surely, 2^550550505551 is an apocalyptic number.

550550505551 is a deficient number, since it is larger than the sum of its proper divisors (15509174257).

550550505551 is a wasteful number, since it uses less digits than its factorization.

550550505551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49550353.

The product of its (nonzero) digits is 390625, while the sum is 41.

The spelling of 550550505551 in words is "five hundred fifty billion, five hundred fifty million, five hundred five thousand, five hundred fifty-one".