452521004809 has 4 divisors (see below), whose sum is σ = 458894540160. Its totient is φ = 446147469460.

The previous prime is 452521004707. The next prime is 452521004833. The reversal of 452521004809 is 908400125254.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 908400125254 = 2 ⋅454200062627.

It is a cyclic number.

It is not a de Polignac number, because 452521004809 - 2²¹ = 452518907657 is a prime.

It is a super-2 number, since 2×452521004809² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (452521004879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3186767569 + ... + 3186767710.

It is an arithmetic number, because the mean of its divisors is an integer number (114723635040).

Almost surely, 2^452521004809 is an apocalyptic number.

It is an amenable number.

452521004809 is a deficient number, since it is larger than the sum of its proper divisors (6373535351).

452521004809 is an equidigital number, since it uses as much as digits as its factorization.

452521004809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6373535350.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 452521004809 in words is "four hundred fifty-two billion, five hundred twenty-one million, four thousand, eight hundred nine".