455440 has 20 divisors (see below), whose sum is σ = 1059084. Its totient is φ = 182144.

The previous prime is 455437. The next prime is 455443. The reversal of 455440 is 44554.

455440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (455437) and next prime (455443).

It can be written as a sum of positive squares in 2 ways, for example, as 104976 + 350464 = 324^2 + 592^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (455443) 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, 2767 + ... + 2926.

2⁴⁵⁵⁴⁴⁰ is an apocalyptic number.

455440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

455440 is an abundant number, since it is smaller than the sum of its proper divisors (603644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

455440 is a wasteful number, since it uses less digits than its factorization.

455440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5706 (or 5700 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 455440 is about 674.8629490497. The cubic root of 455440 is about 76.9385015222.

Adding to 455440 its reverse (44554), we get a palindrome (499994).

The spelling of 455440 in words is "four hundred fifty-five thousand, four hundred forty".