455405 has 4 divisors (see below), whose sum is σ = 546492. Its totient is φ = 364320.

The previous prime is 455401. The next prime is 455407. The reversal of 455405 is 504554.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504554 = 2 ⋅252277.

It can be written as a sum of positive squares in 2 ways, for example, as 252004 + 203401 = 502^2 + 451^2 .

It is not a de Polignac number, because 455405 - 2² = 455401 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455401) by changing a digit.

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, 45536 + ... + 45545.

It is an arithmetic number, because the mean of its divisors is an integer number (136623).

2⁴⁵⁵⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

455405 is a deficient number, since it is larger than the sum of its proper divisors (91087).

455405 is an equidigital number, since it uses as much as digits as its factorization.

455405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91086.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 455405 is about 674.8370173605. The cubic root of 455405 is about 76.9365305956.

Adding to 455405 its reverse (504554), we get a palindrome (959959).

The spelling of 455405 in words is "four hundred fifty-five thousand, four hundred five".