550865 has 8 divisors (see below), whose sum is σ = 755520. Its totient is φ = 377712.

The previous prime is 550861. The next prime is 550903. The reversal of 550865 is 568055.

550865 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 a cyclic number.

It is not a de Polignac number, because 550865 - 2² = 550861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (550861) 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, 7835 + ... + 7904.

It is an arithmetic number, because the mean of its divisors is an integer number (94440).

2⁵⁵⁰⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

550865 is a deficient number, since it is larger than the sum of its proper divisors (204655).

550865 is a wasteful number, since it uses less digits than its factorization.

550865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15751.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 550865 is about 742.2028024738. The cubic root of 550865 is about 81.9750568592.

The spelling of 550865 in words is "five hundred fifty thousand, eight hundred sixty-five".