554155221 has 16 divisors (see below), whose sum is σ = 758092608. Its totient is φ = 359856000.

The previous prime is 554155219. The next prime is 554155241. The reversal of 554155221 is 122551455.

554155221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 554155221 - 2¹ = 554155219 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (554155201) 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, 83010 + ... + 89436.

It is an arithmetic number, because the mean of its divisors is an integer number (47380788).

Almost surely, 2^554155221 is an apocalyptic number.

It is an amenable number.

554155221 is a deficient number, since it is larger than the sum of its proper divisors (203937387).

554155221 is a wasteful number, since it uses less digits than its factorization.

554155221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7172.

The product of its digits is 10000, while the sum is 30.

The square root of 554155221 is about 23540.5017151292. The cubic root of 554155221 is about 821.3794059013.

The spelling of 554155221 in words is "five hundred fifty-four million, one hundred fifty-five thousand, two hundred twenty-one".