5546581920 has 576 divisors, whose sum is σ = 21766631040. Its totient is φ = 1334361600.

The previous prime is 5546581867. The next prime is 5546581921. The reversal of 5546581920 is 291856455.

5546581920 is a `hidden beast` number, since 5 + 5 + 46 + 581 + 9 + 20 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5546581921) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 42340255 + ... + 42340385.

It is an arithmetic number, because the mean of its divisors is an integer number (37789290).

Almost surely, 2^5546581920 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 5546581920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10883315520).

5546581920 is an abundant number, since it is smaller than the sum of its proper divisors (16220049120).

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

5546581920 is a wasteful number, since it uses less digits than its factorization.

5546581920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The square root of 5546581920 is about 74475.3779446603. The cubic root of 5546581920 is about 1770.1435103404.

The spelling of 5546581920 in words is "five billion, five hundred forty-six million, five hundred eighty-one thousand, nine hundred twenty".