5511981223 has 16 divisors (see below), whose sum is σ = 6338306880. Its totient is φ = 4695457536.

The previous prime is 5511981121. The next prime is 5511981311. The reversal of 5511981223 is 3221891155.

It is not a de Polignac number, because 5511981223 - 2⁹ = 5511980711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5511981523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 986265 + ... + 991837.

It is an arithmetic number, because the mean of its divisors is an integer number (396144180).

Almost surely, 2^5511981223 is an apocalyptic number.

5511981223 is a deficient number, since it is larger than the sum of its proper divisors (826325657).

5511981223 is a wasteful number, since it uses less digits than its factorization.

5511981223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6426.

The product of its digits is 21600, while the sum is 37.

The square root of 5511981223 is about 74242.7183163440. The cubic root of 5511981223 is about 1766.4549923243.

The spelling of 5511981223 in words is "five billion, five hundred eleven million, nine hundred eighty-one thousand, two hundred twenty-three".