5521378772 has 24 divisors (see below), whose sum is σ = 11892201216. Its totient is φ = 2184281568.

The previous prime is 5521378747. The next prime is 5521378789. The reversal of 5521378772 is 2778731255.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7583948 + ... + 7584675.

It is an arithmetic number, because the mean of its divisors is an integer number (495508384).

Almost surely, 2^5521378772 is an apocalyptic number.

5521378772 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

5521378772 is an abundant number, since it is smaller than the sum of its proper divisors (6370822444).

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

5521378772 is a wasteful number, since it uses less digits than its factorization.

5521378772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15168647 (or 15168645 counting only the distinct ones).

The product of its digits is 823200, while the sum is 47.

The square root of 5521378772 is about 74305.9807283371. The cubic root of 5521378772 is about 1767.4583171091.

The spelling of 5521378772 in words is "five billion, five hundred twenty-one million, three hundred seventy-eight thousand, seven hundred seventy-two".