455240 has 32 divisors (see below), whose sum is σ = 1080000. Its totient is φ = 172224.

The previous prime is 455237. The next prime is 455261. The reversal of 455240 is 42554.

It is a happy number.

455240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461 + ... + 1059.

It is an arithmetic number, because the mean of its divisors is an integer number (33750).

2⁴⁵⁵²⁴⁰ is an apocalyptic number.

455240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 455240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (540000).

455240 is an abundant number, since it is smaller than the sum of its proper divisors (624760).

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

455240 is a wasteful number, since it uses less digits than its factorization.

455240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 455240 is about 674.7147545445. The cubic root of 455240 is about 76.9272377237.

Adding to 455240 its reverse (42554), we get a palindrome (497794).

Subtracting from 455240 its reverse (42554), we obtain a triangular number (412686 = T₉₀₈).

The spelling of 455240 in words is "four hundred fifty-five thousand, two hundred forty".