154085 has 4 divisors (see below), whose sum is σ = 184908. Its totient is φ = 123264.

The previous prime is 154081. The next prime is 154087. The reversal of 154085 is 580451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 580451 = 23 ⋅25237.

It can be written as a sum of positive squares in 2 ways, for example, as 25921 + 128164 = 161^2 + 358^2 .

It is a cyclic number.

It is not a de Polignac number, because 154085 - 2² = 154081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 154085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15404 + ... + 15413.

It is an arithmetic number, because the mean of its divisors is an integer number (46227).

2¹⁵⁴⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

154085 is a deficient number, since it is larger than the sum of its proper divisors (30823).

154085 is an equidigital number, since it uses as much as digits as its factorization.

154085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30822.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 154085 is about 392.5366224953. The cubic root of 154085 is about 53.6109439672.

The spelling of 154085 in words is "one hundred fifty-four thousand, eighty-five".