550857 has 8 divisors (see below), whose sum is σ = 740320. Its totient is φ = 364320.

The previous prime is 550843. The next prime is 550859. The reversal of 550857 is 758055.

It is a happy number.

550857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 550857 - 2⁴ = 550841 is a prime.

It is a Duffinian number.

550857 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (550859) 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, 244 + ... + 1077.

It is an arithmetic number, because the mean of its divisors is an integer number (92540).

2⁵⁵⁰⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

550857 is a deficient number, since it is larger than the sum of its proper divisors (189463).

550857 is a wasteful number, since it uses less digits than its factorization.

550857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463.

The product of its (nonzero) digits is 7000, while the sum is 30.

The square root of 550857 is about 742.1974130917. The cubic root of 550857 is about 81.9746600266.

It can be divided in two parts, 5508 and 57, that added together give a triangular number (5565 = T₁₀₅).

The spelling of 550857 in words is "five hundred fifty thousand, eight hundred fifty-seven".