154555 has 4 divisors (see below), whose sum is σ = 185472. Its totient is φ = 123640.

The previous prime is 154543. The next prime is 154571. The reversal of 154555 is 555451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 555451 = 13 ⋅42727.

It is not a de Polignac number, because 154555 - 2⁵ = 154523 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15451 + ... + 15460.

It is an arithmetic number, because the mean of its divisors is an integer number (46368).

2¹⁵⁴⁵⁵⁵ is an apocalyptic number.

154555 is a deficient number, since it is larger than the sum of its proper divisors (30917).

154555 is an equidigital number, since it uses as much as digits as its factorization.

154555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30916.

The product of its digits is 2500, while the sum is 25.

The square root of 154555 is about 393.1348369199. The cubic root of 154555 is about 53.6653978242.

It can be divided in two parts, 1545 and 55, that added together give a square (1600 = 40²).

The spelling of 154555 in words is "one hundred fifty-four thousand, five hundred fifty-five".