5555775805 has 4 divisors (see below), whose sum is σ = 6666930972. Its totient is φ = 4444620640.

The previous prime is 5555775793. The next prime is 5555775821. The reversal of 5555775805 is 5085775555.

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 718990596 + 4836785209 = 26814^2 + 69547^2 .

It is not a de Polignac number, because 5555775805 - 2⁷ = 5555775677 is a prime.

It is a Duffinian number.

It is a congruent 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, 555577576 + ... + 555577585.

It is an arithmetic number, because the mean of its divisors is an integer number (1666732743).

Almost surely, 2^5555775805 is an apocalyptic number.

It is an amenable number.

5555775805 is a deficient number, since it is larger than the sum of its proper divisors (1111155167).

5555775805 is a wasteful number, since it uses less digits than its factorization.

5555775805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111155166.

The product of its (nonzero) digits is 6125000, while the sum is 52.

The square root of 5555775805 is about 74537.0767135390. The cubic root of 5555775805 is about 1771.1210199910.

The spelling of 5555775805 in words is "five billion, five hundred fifty-five million, seven hundred seventy-five thousand, eight hundred five".