550777855 has 24 divisors (see below), whose sum is σ = 685081152. Its totient is φ = 424936512.

The previous prime is 550777853. The next prime is 550777861. The reversal of 550777855 is 558777055.

It is not a de Polignac number, because 550777855 - 2¹ = 550777853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 550777799 and 550777808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550777853) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1189354 + ... + 1189816.

It is an arithmetic number, because the mean of its divisors is an integer number (28545048).

Almost surely, 2^550777855 is an apocalyptic number.

550777855 is a deficient number, since it is larger than the sum of its proper divisors (134303297).

550777855 is an equidigital number, since it uses as much as digits as its factorization.

550777855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 588 counting only the distinct ones).

The product of its (nonzero) digits is 1715000, while the sum is 49.

The square root of 550777855 is about 23468.6568639963. The cubic root of 550777855 is about 819.7073390467.

The spelling of 550777855 in words is "five hundred fifty million, seven hundred seventy-seven thousand, eight hundred fifty-five".