5553866721 has 16 divisors (see below), whose sum is σ = 8232035840. Its totient is φ = 3307512960.

The previous prime is 5553866707. The next prime is 5553866743. The reversal of 5553866721 is 1276683555.

It is not a de Polignac number, because 5553866721 - 2⁶ = 5553866657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5553866761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2295676 + ... + 2298093.

It is an arithmetic number, because the mean of its divisors is an integer number (514502240).

Almost surely, 2^5553866721 is an apocalyptic number.

It is an amenable number.

5553866721 is a deficient number, since it is larger than the sum of its proper divisors (2678169119).

5553866721 is a wasteful number, since it uses less digits than its factorization.

5553866721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4593816.

The product of its digits is 1512000, while the sum is 48.

The square root of 5553866721 is about 74524.2693422753. The cubic root of 5553866721 is about 1770.9181316648.

The spelling of 5553866721 in words is "five billion, five hundred fifty-three million, eight hundred sixty-six thousand, seven hundred twenty-one".