455509 has 4 divisors (see below), whose sum is σ = 458316. Its totient is φ = 452704.

The previous prime is 455491. The next prime is 455513. The reversal of 455509 is 905554.

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

It can be written as a sum of positive squares in 2 ways, for example, as 253009 + 202500 = 503^2 + 450^2 .

It is a cyclic number.

It is not a de Polignac number, because 455509 - 2⁷ = 455381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455579) 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, 1144 + ... + 1489.

It is an arithmetic number, because the mean of its divisors is an integer number (114579).

2⁴⁵⁵⁵⁰⁹ is an apocalyptic number.

It is an amenable number.

455509 is a deficient number, since it is larger than the sum of its proper divisors (2807).

455509 is a wasteful number, since it uses less digits than its factorization.

455509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2806.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 455509 is about 674.9140686043. The cubic root of 455509 is about 76.9423867677.

The spelling of 455509 in words is "four hundred fifty-five thousand, five hundred nine".