550343454221 has 8 divisors (see below), whose sum is σ = 631973344800. Its totient is φ = 473980008240.

The previous prime is 550343454209. The next prime is 550343454229. The reversal of 550343454221 is 122454343055.

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 550343454221 - 2²² = 550339259917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550343454229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1316610926 + ... + 1316611343.

It is an arithmetic number, because the mean of its divisors is an integer number (78996668100).

Almost surely, 2^550343454221 is an apocalyptic number.

It is an amenable number.

550343454221 is a deficient number, since it is larger than the sum of its proper divisors (81629890579).

550343454221 is a wasteful number, since it uses less digits than its factorization.

550343454221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2633222299.

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 550343454221 its reverse (122454343055), we get a palindrome (672797797276).

The spelling of 550343454221 in words is "five hundred fifty billion, three hundred forty-three million, four hundred fifty-four thousand, two hundred twenty-one".