455245440 has 384 divisors, whose sum is σ = 1666500480. Its totient is φ = 105431040.

The previous prime is 455245421. The next prime is 455245457. The reversal of 455245440 is 44542554.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7463010 + ... + 7463070.

It is an arithmetic number, because the mean of its divisors is an integer number (4339845).

Almost surely, 2^455245440 is an apocalyptic number.

455245440 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 455245440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (833250240).

455245440 is an abundant number, since it is smaller than the sum of its proper divisors (1211255040).

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

455245440 is a wasteful number, since it uses less digits than its factorization.

455245440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 33.

The square root of 455245440 is about 21336.4814343884. The cubic root of 455245440 is about 769.2754414262.

Adding to 455245440 its reverse (44542554), we get a palindrome (499787994).

The spelling of 455245440 in words is "four hundred fifty-five million, two hundred forty-five thousand, four hundred forty".