554489856 has 144 divisors (see below), whose sum is σ = 1628991000. Its totient is φ = 181665792.

The previous prime is 554489851. The next prime is 554489909. The reversal of 554489856 is 658984455.

554489856 is a `hidden beast` number, since 5 + 544 + 8 + 98 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (554489851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1234720 + ... + 1235168.

Almost surely, 2^554489856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 554489856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (814495500).

554489856 is an abundant number, since it is smaller than the sum of its proper divisors (1074501144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

554489856 is a wasteful number, since it uses less digits than its factorization.

554489856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544 (or 521 counting only the distinct ones).

The product of its digits is 6912000, while the sum is 54.

The square root of 554489856 is about 23547.6082861933. The cubic root of 554489856 is about 821.5447067527.

The spelling of 554489856 in words is "five hundred fifty-four million, four hundred eighty-nine thousand, eight hundred fifty-six".