8220523 has 2 divisors, whose sum is σ = 8220524. Its totient is φ = 8220522.

The previous prime is 8220517. The next prime is 8220551. The reversal of 8220523 is 3250228.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8220523 - 2¹⁷ = 8089451 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8220494 and 8220503.

It is not a weakly prime, because it can be changed into another prime (8220923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4110261 + 4110262.

It is an arithmetic number, because the mean of its divisors is an integer number (4110262).

Almost surely, 2^8220523 is an apocalyptic number.

8220523 is a deficient number, since it is larger than the sum of its proper divisors (1).

8220523 is an equidigital number, since it uses as much as digits as its factorization.

8220523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 8220523 is about 2867.1454445145. The cubic root of 8220523 is about 201.8210600424.

It can be divided in two parts, 82205 and 23, that added together give a palindrome (82228).

The spelling of 8220523 in words is "eight million, two hundred twenty thousand, five hundred twenty-three".