8520433 has 2 divisors, whose sum is σ = 8520434. Its totient is φ = 8520432.

The previous prime is 8520431. The next prime is 8520437. The reversal of 8520433 is 3340258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7907344 + 613089 = 2812^2 + 783^2 .

It is a cyclic number.

It is not a de Polignac number, because 8520433 - 2¹ = 8520431 is a prime.

Together with 8520431, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 8520398 and 8520407.

It is not a weakly prime, because it can be changed into another prime (8520431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4260216 + 4260217.

It is an arithmetic number, because the mean of its divisors is an integer number (4260217).

Almost surely, 2^8520433 is an apocalyptic number.

It is an amenable number.

8520433 is a deficient number, since it is larger than the sum of its proper divisors (1).

8520433 is an equidigital number, since it uses as much as digits as its factorization.

8520433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 8520433 is about 2918.9780746008. The cubic root of 8520433 is about 204.2461545459.

The spelling of 8520433 in words is "eight million, five hundred twenty thousand, four hundred thirty-three".