5555654221 has 16 divisors (see below), whose sum is σ = 6089005440. Its totient is φ = 5037963840.

The previous prime is 5555654113. The next prime is 5555654233. The reversal of 5555654221 is 1224565555.

It is not a de Polignac number, because 5555654221 - 2²³ = 5547265613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5555657221) 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, 250575 + ... + 271843.

It is an arithmetic number, because the mean of its divisors is an integer number (380562840).

Almost surely, 2^5555654221 is an apocalyptic number.

It is an amenable number.

5555654221 is a deficient number, since it is larger than the sum of its proper divisors (533351219).

5555654221 is a wasteful number, since it uses less digits than its factorization.

5555654221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21636.

The product of its digits is 300000, while the sum is 40.

The square root of 5555654221 is about 74536.2611149768. The cubic root of 5555654221 is about 1771.1081000103.

The spelling of 5555654221 in words is "five billion, five hundred fifty-five million, six hundred fifty-four thousand, two hundred twenty-one".