550776811 has 4 divisors (see below), whose sum is σ = 593144272. Its totient is φ = 508409352.

The previous prime is 550776781. The next prime is 550776839. The reversal of 550776811 is 118677055.

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

It is a cyclic number.

It is not a de Polignac number, because 550776811 - 2⁹ = 550776299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550776841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21183711 + ... + 21183736.

It is an arithmetic number, because the mean of its divisors is an integer number (148286068).

Almost surely, 2^550776811 is an apocalyptic number.

550776811 is a deficient number, since it is larger than the sum of its proper divisors (42367461).

550776811 is a wasteful number, since it uses less digits than its factorization.

550776811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42367460.

The product of its (nonzero) digits is 58800, while the sum is 40.

The square root of 550776811 is about 23468.6346215539. The cubic root of 550776811 is about 819.7068211277.

The spelling of 550776811 in words is "five hundred fifty million, seven hundred seventy-six thousand, eight hundred eleven".