455209 has 4 divisors (see below), whose sum is σ = 482004. Its totient is φ = 428416.

The previous prime is 455201. The next prime is 455219. The reversal of 455209 is 902554.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 902554 = 2 ⋅451277.

It can be written as a sum of positive squares in 2 ways, for example, as 205209 + 250000 = 453^2 + 500^2 .

It is a cyclic number.

It is not a de Polignac number, because 455209 - 2³ = 455201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (455201) 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, 13372 + ... + 13405.

It is an arithmetic number, because the mean of its divisors is an integer number (120501).

2⁴⁵⁵²⁰⁹ is an apocalyptic number.

It is an amenable number.

455209 is a deficient number, since it is larger than the sum of its proper divisors (26795).

455209 is a wasteful number, since it uses less digits than its factorization.

455209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26794.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 455209 is about 674.6917814825. The cubic root of 455209 is about 76.9254915396.

The spelling of 455209 in words is "four hundred fifty-five thousand, two hundred nine".