453450522521 has 2 divisors, whose sum is σ = 453450522522. Its totient is φ = 453450522520.

The previous prime is 453450522517. The next prime is 453450522529. The reversal of 453450522521 is 125225054354.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 403810682521 + 49639840000 = 635461^2 + 222800^2 .

It is a cyclic number.

It is not a de Polignac number, because 453450522521 - 2² = 453450522517 is a prime.

It is not a weakly prime, because it can be changed into another prime (453450522529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226725261260 + 226725261261.

It is an arithmetic number, because the mean of its divisors is an integer number (226725261261).

Almost surely, 2^453450522521 is an apocalyptic number.

It is an amenable number.

453450522521 is a deficient number, since it is larger than the sum of its proper divisors (1).

453450522521 is an equidigital number, since it uses as much as digits as its factorization.

453450522521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240000, while the sum is 38.

Adding to 453450522521 its reverse (125225054354), we get a palindrome (578675576875).

The spelling of 453450522521 in words is "four hundred fifty-three billion, four hundred fifty million, five hundred twenty-two thousand, five hundred twenty-one".