8411521 has 2 divisors, whose sum is σ = 8411522. Its totient is φ = 8411520.

The previous prime is 8411489. The next prime is 8411539. The reversal of 8411521 is 1251148.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8410000 + 1521 = 2900^2 + 39^2 .

It is a cyclic number.

It is not a de Polignac number, because 8411521 - 2⁵ = 8411489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8411492 and 8411501.

It is not a weakly prime, because it can be changed into another prime (8411551) 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, 4205760 + 4205761.

It is an arithmetic number, because the mean of its divisors is an integer number (4205761).

Almost surely, 2^8411521 is an apocalyptic number.

It is an amenable number.

8411521 is a deficient number, since it is larger than the sum of its proper divisors (1).

8411521 is an equidigital number, since it uses as much as digits as its factorization.

8411521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 320, while the sum is 22.

The square root of 8411521 is about 2900.2622295234. The cubic root of 8411521 is about 203.3721646403.

Adding to 8411521 its reverse (1251148), we get a palindrome (9662669).

It can be divided in two parts, 841 and 1521, that multiplied together give a square (1279161 = 1131²).

The spelling of 8411521 in words is "eight million, four hundred eleven thousand, five hundred twenty-one".