55166 has 4 divisors (see below), whose sum is σ = 82752. Its totient is φ = 27582.
The previous prime is 55163. The next prime is 55171. The reversal of 55166 is 66155.
It is a semiprime because it is the product of two primes.
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 55166.
It is not an unprimeable number, because it can be changed into a prime (55163) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13790 + ... + 13793.
It is an arithmetic number, because the mean of its divisors is an integer number (20688).
255166 is an apocalyptic number.
55166 is a deficient number, since it is larger than the sum of its proper divisors (27586).
55166 is a wasteful number, since it uses less digits than its factorization.
55166 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 27585.
The product of its digits is 900, while the sum is 23.
The square root of 55166 is about 234.8744345390. The cubic root of 55166 is about 38.0677461867.
The spelling of 55166 in words is "fifty-five thousand, one hundred sixty-six".
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