550678 has 4 divisors (see below), whose sum is σ = 826020. Its totient is φ = 275338.

The previous prime is 550663. The next prime is 550679. The reversal of 550678 is 876055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 876055 = 5 ⋅175211.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550679) by changing a digit.

550678 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137668 + ... + 137671.

It is an arithmetic number, because the mean of its divisors is an integer number (206505).

2⁵⁵⁰⁶⁷⁸ is an apocalyptic number.

550678 is a deficient number, since it is larger than the sum of its proper divisors (275342).

550678 is a wasteful number, since it uses less digits than its factorization.

550678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275341.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 550678 is about 742.0768154309. The cubic root of 550678 is about 81.9657798914.

The spelling of 550678 in words is "five hundred fifty thousand, six hundred seventy-eight".