8520943 has 2 divisors, whose sum is σ = 8520944. Its totient is φ = 8520942.

The previous prime is 8520929. The next prime is 8520947. The reversal of 8520943 is 3490258.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8520943 - 2⁹ = 8520431 is a prime.

8520943 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8520947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4260471 + 4260472.

It is an arithmetic number, because the mean of its divisors is an integer number (4260472).

Almost surely, 2^8520943 is an apocalyptic number.

8520943 is a deficient number, since it is larger than the sum of its proper divisors (1).

8520943 is an equidigital number, since it uses as much as digits as its factorization.

8520943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 8520943 is about 2919.0654326342. The cubic root of 8520943 is about 204.2502295915.

The spelling of 8520943 in words is "eight million, five hundred twenty thousand, nine hundred forty-three".