550166 has 4 divisors (see below), whose sum is σ = 825252. Its totient is φ = 275082.

The previous prime is 550163. The next prime is 550169. The reversal of 550166 is 661055.

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

It is an interprime number because it is at equal distance from previous prime (550163) and next prime (550169).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 550166.

It is not an unprimeable number, because it can be changed into a prime (550163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137540 + ... + 137543.

It is an arithmetic number, because the mean of its divisors is an integer number (206313).

2⁵⁵⁰¹⁶⁶ is an apocalyptic number.

550166 is a deficient number, since it is larger than the sum of its proper divisors (275086).

550166 is a wasteful number, since it uses less digits than its factorization.

550166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275085.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 550166 is about 741.7317574433. The cubic root of 550166 is about 81.9403690995.

Subtracting 550166 from its reverse (661055), we obtain a square (110889 = 333²).

The spelling of 550166 in words is "five hundred fifty thousand, one hundred sixty-six".