450155 has 4 divisors (see below), whose sum is σ = 540192. Its totient is φ = 360120.

The previous prime is 450137. The next prime is 450161. The reversal of 450155 is 551054.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 450155 - 2¹⁰ = 449131 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45011 + ... + 45020.

It is an arithmetic number, because the mean of its divisors is an integer number (135048).

2⁴⁵⁰¹⁵⁵ is an apocalyptic number.

450155 is a deficient number, since it is larger than the sum of its proper divisors (90037).

450155 is an equidigital number, since it uses as much as digits as its factorization.

450155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90036.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 450155 is about 670.9359134821. The cubic root of 450155 is about 76.6397405969.

The spelling of 450155 in words is "four hundred fifty thousand, one hundred fifty-five".