155166 has 16 divisors (see below), whose sum is σ = 338688. Its totient is φ = 47000.

The previous prime is 155161. The next prime is 155167. The reversal of 155166 is 661551.

It is a Curzon number.

It is a nialpdrome in base 11.

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 155166.

It is not an unprimeable number, because it can be changed into a prime (155161) by changing a digit.

155166 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 in 7 ways as a sum of consecutive naturals, for example, 1110 + ... + 1241.

It is an arithmetic number, because the mean of its divisors is an integer number (21168).

2¹⁵⁵¹⁶⁶ is an apocalyptic number.

155166 is an abundant number, since it is smaller than the sum of its proper divisors (183522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155166 is a wasteful number, since it uses less digits than its factorization.

155166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367.

The product of its digits is 900, while the sum is 24.

The square root of 155166 is about 393.9111574962. The cubic root of 155166 is about 53.7360230469.

It can be divided in two parts, 15516 and 6, that multiplied together give a triangular number (93096 = T₄₃₁).

The spelling of 155166 in words is "one hundred fifty-five thousand, one hundred sixty-six".