165454 has 4 divisors (see below), whose sum is σ = 248184. Its totient is φ = 82726.

The previous prime is 165449. The next prime is 165457. The reversal of 165454 is 454561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 454561 = 251 ⋅1811.

It is a super-2 number, since 2×165454² = 54750052232, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a nialpdrome in base 14.

It is a zygodrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165457) by changing a digit.

165454 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 as a sum of consecutive naturals, namely, 41362 + ... + 41365.

It is an arithmetic number, because the mean of its divisors is an integer number (62046).

2¹⁶⁵⁴⁵⁴ is an apocalyptic number.

165454 is a deficient number, since it is larger than the sum of its proper divisors (82730).

165454 is an equidigital number, since it uses as much as digits as its factorization.

165454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82729.

The product of its digits is 2400, while the sum is 25.

The square root of 165454 is about 406.7603717178. The cubic root of 165454 is about 54.8983245508.

The spelling of 165454 in words is "one hundred sixty-five thousand, four hundred fifty-four".