454613521 has 4 divisors (see below), whose sum is σ = 455901732. Its totient is φ = 453325312.

The previous prime is 454613503. The next prime is 454613527. The reversal of 454613521 is 125316454.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 125316454 = 2 ⋅62658227.

It can be written as a sum of positive squares in 2 ways, for example, as 164762896 + 289850625 = 12836^2 + 17025^2 .

It is a cyclic number.

It is not a de Polignac number, because 454613521 - 2¹⁷ = 454482449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (454613527) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 643576 + ... + 644281.

It is an arithmetic number, because the mean of its divisors is an integer number (113975433).

Almost surely, 2^454613521 is an apocalyptic number.

It is an amenable number.

454613521 is a deficient number, since it is larger than the sum of its proper divisors (1288211).

454613521 is a wasteful number, since it uses less digits than its factorization.

454613521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288210.

The product of its digits is 14400, while the sum is 31.

The square root of 454613521 is about 21321.6678756611. The cubic root of 454613521 is about 768.9193369137.

Adding to 454613521 its reverse (125316454), we get a palindrome (579929975).

The spelling of 454613521 in words is "four hundred fifty-four million, six hundred thirteen thousand, five hundred twenty-one".