8427533 has 2 divisors, whose sum is σ = 8427534. Its totient is φ = 8427532.

The previous prime is 8427521. The next prime is 8427539. The reversal of 8427533 is 3357248.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8421604 + 5929 = 2902^2 + 77^2 .

It is a cyclic number.

It is not a de Polignac number, because 8427533 - 2¹⁴ = 8411149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8427533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8427539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4213766 + 4213767.

It is an arithmetic number, because the mean of its divisors is an integer number (4213767).

Almost surely, 2^8427533 is an apocalyptic number.

It is an amenable number.

8427533 is a deficient number, since it is larger than the sum of its proper divisors (1).

8427533 is an equidigital number, since it uses as much as digits as its factorization.

8427533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 32.

The square root of 8427533 is about 2903.0213571381. The cubic root of 8427533 is about 203.5011278806.

Adding to 8427533 its sum of digits (32), we get a triangular number (8427565 = T₄₁₀₅).

The spelling of 8427533 in words is "eight million, four hundred twenty-seven thousand, five hundred thirty-three".