455520321 has 32 divisors (see below), whose sum is σ = 716325120. Its totient is φ = 285103872.

The previous prime is 455520311. The next prime is 455520323. The reversal of 455520321 is 123025554.

It is a happy number.

455520321 is a `hidden beast` number, since 455 + 5 + 203 + 2 + 1 = 666.

It is not a de Polignac number, because 455520321 - 2⁹ = 455519809 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (455520323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 229891 + ... + 231863.

It is an arithmetic number, because the mean of its divisors is an integer number (22385160).

Almost surely, 2^455520321 is an apocalyptic number.

It is an amenable number.

455520321 is a deficient number, since it is larger than the sum of its proper divisors (260804799).

455520321 is a wasteful number, since it uses less digits than its factorization.

455520321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502 (or 2496 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 455520321 is about 21342.9220351853. The cubic root of 455520321 is about 769.4302419199.

Adding to 455520321 its reverse (123025554), we get a palindrome (578545875).

The spelling of 455520321 in words is "four hundred fifty-five million, five hundred twenty thousand, three hundred twenty-one".