5501553450221 has 4 divisors (see below), whose sum is σ = 5583666188352. Its totient is φ = 5419440712092.

The previous prime is 5501553450181. The next prime is 5501553450313. The reversal of 5501553450221 is 1220543551055.

5501553450221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5501553450221 - 2³⁰ = 5500479708397 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 (5501553450521) 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, 41056368965 + ... + 41056369098.

It is an arithmetic number, because the mean of its divisors is an integer number (1395916547088).

Almost surely, 2^{5501553450221} is an apocalyptic number.

It is an amenable number.

5501553450221 is a deficient number, since it is larger than the sum of its proper divisors (82112738131).

5501553450221 is an equidigital number, since it uses as much as digits as its factorization.

5501553450221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82112738130.

The product of its (nonzero) digits is 150000, while the sum is 38.

The spelling of 5501553450221 in words is "five trillion, five hundred one billion, five hundred fifty-three million, four hundred fifty thousand, two hundred twenty-one".