550776813 has 8 divisors (see below), whose sum is σ = 738614688. Its totient is φ = 365061744.

The previous prime is 550776781. The next prime is 550776839. The reversal of 550776813 is 318677055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 550776813 - 2⁵ = 550776781 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550776913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530095 + ... + 531132.

It is an arithmetic number, because the mean of its divisors is an integer number (92326836).

Almost surely, 2^550776813 is an apocalyptic number.

It is an amenable number.

550776813 is a deficient number, since it is larger than the sum of its proper divisors (187837875).

550776813 is a wasteful number, since it uses less digits than its factorization.

550776813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061403.

The product of its (nonzero) digits is 176400, while the sum is 42.

The square root of 550776813 is about 23468.6346641640. The cubic root of 550776813 is about 819.7068221198.

The spelling of 550776813 in words is "five hundred fifty million, seven hundred seventy-six thousand, eight hundred thirteen".