5561111172 has 24 divisors (see below), whose sum is σ = 13002367392. Its totient is φ = 1849926400.

The previous prime is 5561111167. The next prime is 5561111183. The reversal of 5561111172 is 2711111655.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466029 + ... + 477812.

It is an arithmetic number, because the mean of its divisors is an integer number (541765308).

Almost surely, 2^5561111172 is an apocalyptic number.

It is an amenable number.

5561111172 is an abundant number, since it is smaller than the sum of its proper divisors (7441256220).

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

5561111172 is a wasteful number, since it uses less digits than its factorization.

5561111172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944339 (or 944337 counting only the distinct ones).

The product of its digits is 2100, while the sum is 30.

The square root of 5561111172 is about 74572.8581455747. The cubic root of 5561111172 is about 1771.6877909629.

The spelling of 5561111172 in words is "five billion, five hundred sixty-one million, one hundred eleven thousand, one hundred seventy-two".