5511544505 has 4 divisors (see below), whose sum is σ = 6613853412. Its totient is φ = 4409235600.

The previous prime is 5511544499. The next prime is 5511544513. The reversal of 5511544505 is 5054451155.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4402587904 + 1108956601 = 66352^2 + 33301^2 .

It is not a de Polignac number, because 5511544505 - 2⁸ = 5511544249 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 551154446 + ... + 551154455.

It is an arithmetic number, because the mean of its divisors is an integer number (1653463353).

Almost surely, 2^5511544505 is an apocalyptic number.

It is an amenable number.

5511544505 is a deficient number, since it is larger than the sum of its proper divisors (1102308907).

5511544505 is a wasteful number, since it uses less digits than its factorization.

5511544505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102308906.

The product of its (nonzero) digits is 50000, while the sum is 35.

The square root of 5511544505 is about 74239.7771076934. Note that the first 3 decimals coincide. The cubic root of 5511544505 is about 1766.4083386176.

The spelling of 5511544505 in words is "five billion, five hundred eleven million, five hundred forty-four thousand, five hundred five".