452647521 has 24 divisors (see below), whose sum is σ = 707528640. Its totient is φ = 288641232.

The previous prime is 452647513. The next prime is 452647549. The reversal of 452647521 is 125746254.

It is a happy number.

452647521 is a `hidden beast` number, since 4 + 5 + 2 + 647 + 5 + 2 + 1 = 666.

It is not a de Polignac number, because 452647521 - 2³ = 452647513 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (452647501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34906 + ... + 46083.

It is an arithmetic number, because the mean of its divisors is an integer number (29480360).

Almost surely, 2^452647521 is an apocalyptic number.

It is an amenable number.

452647521 is a deficient number, since it is larger than the sum of its proper divisors (254881119).

452647521 is an equidigital number, since it uses as much as digits as its factorization.

452647521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81027 (or 81015 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 452647521 is about 21275.5145883713. The cubic root of 452647521 is about 767.8093246122.

The spelling of 452647521 in words is "four hundred fifty-two million, six hundred forty-seven thousand, five hundred twenty-one".