455540220 has 96 divisors (see below), whose sum is σ = 1420372800. Its totient is φ = 121208832.

The previous prime is 455540213. The next prime is 455540243. The reversal of 455540220 is 22045554.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 414712 + ... + 415808.

It is an arithmetic number, because the mean of its divisors is an integer number (14795550).

Almost surely, 2^455540220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 455540220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (710186400).

455540220 is an abundant number, since it is smaller than the sum of its proper divisors (964832580).

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

455540220 is a wasteful number, since it uses less digits than its factorization.

455540220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1884 (or 1876 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 455540220 is about 21343.3882033758. The cubic root of 455540220 is about 769.4414457153.

Adding to 455540220 its reverse (22045554), we get a palindrome (477585774).

The spelling of 455540220 in words is "four hundred fifty-five million, five hundred forty thousand, two hundred twenty".