5566728445 has 4 divisors (see below), whose sum is σ = 6680074140. Its totient is φ = 4453382752.

The previous prime is 5566728439. The next prime is 5566728449. The reversal of 5566728445 is 5448276655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5448276655 = 5 ⋅1089655331.

It can be written as a sum of positive squares in 2 ways, for example, as 1567051396 + 3999677049 = 39586^2 + 63243^2 .

It is a cyclic number.

It is not a de Polignac number, because 5566728445 - 2⁵ = 5566728413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5566728392 and 5566728401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5566728449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 556672840 + ... + 556672849.

It is an arithmetic number, because the mean of its divisors is an integer number (1670018535).

Almost surely, 2^5566728445 is an apocalyptic number.

It is an amenable number.

5566728445 is a deficient number, since it is larger than the sum of its proper divisors (1113345695).

5566728445 is a wasteful number, since it uses less digits than its factorization.

5566728445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113345694.

The product of its digits is 8064000, while the sum is 52.

The square root of 5566728445 is about 74610.5116253735. The cubic root of 5566728445 is about 1772.2841169314.

The spelling of 5566728445 in words is "five billion, five hundred sixty-six million, seven hundred twenty-eight thousand, four hundred forty-five".