8509453 has 2 divisors, whose sum is σ = 8509454. Its totient is φ = 8509452.

The previous prime is 8509451. The next prime is 8509483. The reversal of 8509453 is 3549058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8277129 + 232324 = 2877^2 + 482^2 .

It is a cyclic number.

It is not a de Polignac number, because 8509453 - 2¹ = 8509451 is a prime.

Together with 8509451, it forms a pair of twin primes.

8509453 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8509451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4254726 + 4254727.

It is an arithmetic number, because the mean of its divisors is an integer number (4254727).

Almost surely, 2^8509453 is an apocalyptic number.

It is an amenable number.

8509453 is a deficient number, since it is larger than the sum of its proper divisors (1).

8509453 is an equidigital number, since it uses as much as digits as its factorization.

8509453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 8509453 is about 2917.0966730638. The cubic root of 8509453 is about 204.1583817453.

The spelling of 8509453 in words is "eight million, five hundred nine thousand, four hundred fifty-three".