154855 has 4 divisors (see below), whose sum is σ = 185832. Its totient is φ = 123880.

The previous prime is 154849. The next prime is 154871. The reversal of 154855 is 558451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 558451 = 79 ⋅7069.

It is not a de Polignac number, because 154855 - 2⁵ = 154823 is a prime.

It is a Duffinian number.

154855 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15481 + ... + 15490.

It is an arithmetic number, because the mean of its divisors is an integer number (46458).

2¹⁵⁴⁸⁵⁵ is an apocalyptic number.

154855 is a deficient number, since it is larger than the sum of its proper divisors (30977).

154855 is an equidigital number, since it uses as much as digits as its factorization.

154855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30976.

The product of its digits is 4000, while the sum is 28.

The square root of 154855 is about 393.5162004289. The cubic root of 154855 is about 53.7000979068.

The spelling of 154855 in words is "one hundred fifty-four thousand, eight hundred fifty-five".