550345054321 has 4 divisors (see below), whose sum is σ = 550969737444. Its totient is φ = 549720371200.

The previous prime is 550345054319. The next prime is 550345054333. The reversal of 550345054321 is 123450543055.

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 64625266225 + 485719788096 = 254215^2 + 696936^2 .

It is a cyclic number.

It is not a de Polignac number, because 550345054321 - 2¹ = 550345054319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550345054621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312340240 + ... + 312342001.

It is an arithmetic number, because the mean of its divisors is an integer number (137742434361).

Almost surely, 2^550345054321 is an apocalyptic number.

It is an amenable number.

550345054321 is a deficient number, since it is larger than the sum of its proper divisors (624683123).

550345054321 is an equidigital number, since it uses as much as digits as its factorization.

550345054321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624683122.

The product of its (nonzero) digits is 180000, while the sum is 37.

Adding to 550345054321 its reverse (123450543055), we get a palindrome (673795597376).

The spelling of 550345054321 in words is "five hundred fifty billion, three hundred forty-five million, fifty-four thousand, three hundred twenty-one".