5505345621 has 12 divisors (see below), whose sum is σ = 7965720672. Its totient is φ = 3663974376.

The previous prime is 5505345581. The next prime is 5505345623. The reversal of 5505345621 is 1265435055.

5505345621 is a `hidden beast` number, since 5 + 50 + 534 + 56 + 21 = 666.

5505345621 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5505345621 - 2¹⁰ = 5505344597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5505345623) 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 11 ways as a sum of consecutive naturals, for example, 515761 + ... + 526326.

It is an arithmetic number, because the mean of its divisors is an integer number (663810056).

Almost surely, 2^5505345621 is an apocalyptic number.

It is an amenable number.

5505345621 is a deficient number, since it is larger than the sum of its proper divisors (2460375051).

5505345621 is a wasteful number, since it uses less digits than its factorization.

5505345621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042680 (or 1042677 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The square root of 5505345621 is about 74198.0162874992. The cubic root of 5505345621 is about 1765.7458583732.

The spelling of 5505345621 in words is "five billion, five hundred five million, three hundred forty-five thousand, six hundred twenty-one".