5501556621 has 24 divisors (see below), whose sum is σ = 8968059360. Its totient is φ = 3219300000.

The previous prime is 5501556589. The next prime is 5501556689. The reversal of 5501556621 is 1266551055.

It is not a de Polignac number, because 5501556621 - 2⁵ = 5501556589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5501556521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 955255 + ... + 960996.

It is an arithmetic number, because the mean of its divisors is an integer number (373669140).

Almost surely, 2^5501556621 is an apocalyptic number.

It is an amenable number.

5501556621 is a deficient number, since it is larger than the sum of its proper divisors (3466502739).

5501556621 is a wasteful number, since it uses less digits than its factorization.

5501556621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916297 (or 1916294 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The square root of 5501556621 is about 74172.4788651424. The cubic root of 5501556621 is about 1765.3406796629.

The spelling of 5501556621 in words is "five billion, five hundred one million, five hundred fifty-six thousand, six hundred twenty-one".