166154 has 4 divisors (see below), whose sum is σ = 249234. Its totient is φ = 83076.

The previous prime is 166151. The next prime is 166157. The reversal of 166154 is 451661.

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 (166151) and next prime (166157).

It can be written as a sum of positive squares in only one way, i.e., 142129 + 24025 = 377^2 + 155^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (166151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41537 + ... + 41540.

2¹⁶⁶¹⁵⁴ is an apocalyptic number.

166154 is a deficient number, since it is larger than the sum of its proper divisors (83080).

166154 is an equidigital number, since it uses as much as digits as its factorization.

166154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83079.

The product of its digits is 720, while the sum is 23.

The square root of 166154 is about 407.6199210048. The cubic root of 166154 is about 54.9756365922.

The spelling of 166154 in words is "one hundred sixty-six thousand, one hundred fifty-four".