5506921440 has 144 divisors (see below), whose sum is σ = 19050162768. Its totient is φ = 1448368128.

The previous prime is 5506921439. The next prime is 5506921451. The reversal of 5506921440 is 441296055.

5506921440 is a `hidden beast` number, since 5 + 506 + 9 + 2 + 144 + 0 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 5506921395 and 5506921404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78927 + ... + 131313.

It is an arithmetic number, because the mean of its divisors is an integer number (132292797).

Almost surely, 2^5506921440 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 5506921440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9525081384).

5506921440 is an abundant number, since it is smaller than the sum of its proper divisors (13543241328).

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

5506921440 is a wasteful number, since it uses less digits than its factorization.

5506921440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52481 (or 52470 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 5506921440 is about 74208.6345380374. The cubic root of 5506921440 is about 1765.9143146715.

The spelling of 5506921440 in words is "five billion, five hundred six million, nine hundred twenty-one thousand, four hundred forty".