166454 has 4 divisors (see below), whose sum is σ = 249684. Its totient is φ = 83226.

The previous prime is 166429. The next prime is 166457. The reversal of 166454 is 454661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 454661 = 151 ⋅3011.

It is a plaindrome in base 15.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41612 + ... + 41615.

It is an arithmetic number, because the mean of its divisors is an integer number (62421).

2¹⁶⁶⁴⁵⁴ is an apocalyptic number.

166454 is a deficient number, since it is larger than the sum of its proper divisors (83230).

166454 is an equidigital number, since it uses as much as digits as its factorization.

166454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83229.

The product of its digits is 2880, while the sum is 26.

The square root of 166454 is about 407.9877449140. The cubic root of 166454 is about 55.0087038567.

The spelling of 166454 in words is "one hundred sixty-six thousand, four hundred fifty-four".