454505521 has 4 divisors (see below), whose sum is σ = 466789492. Its totient is φ = 442221552.

The previous prime is 454505509. The next prime is 454505531. The reversal of 454505521 is 125505454.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 125505454 = 2 ⋅62752727.

It can be written as a sum of positive squares in 2 ways, for example, as 223921296 + 230584225 = 14964^2 + 15185^2 .

It is a cyclic number.

It is not a de Polignac number, because 454505521 - 2⁷ = 454505393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (454505501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6141930 + ... + 6142003.

It is an arithmetic number, because the mean of its divisors is an integer number (116697373).

Almost surely, 2^454505521 is an apocalyptic number.

It is an amenable number.

454505521 is a deficient number, since it is larger than the sum of its proper divisors (12283971).

454505521 is a wasteful number, since it uses less digits than its factorization.

454505521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12283970.

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 454505521 is about 21319.1350903361. The cubic root of 454505521 is about 768.8584427979.

The spelling of 454505521 in words is "four hundred fifty-four million, five hundred five thousand, five hundred twenty-one".