8937521 has 2 divisors, whose sum is σ = 8937522. Its totient is φ = 8937520.

The previous prime is 8937503. The next prime is 8937527. The reversal of 8937521 is 1257398.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8880400 + 57121 = 2980^2 + 239^2 .

It is a cyclic number.

It is not a de Polignac number, because 8937521 - 2⁶ = 8937457 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 8³ + 9⁶ + 3³ + 7⁵ + 5³ + 2²³ + 1 .

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (8937527) 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, 4468760 + 4468761.

It is an arithmetic number, because the mean of its divisors is an integer number (4468761).

Almost surely, 2^8937521 is an apocalyptic number.

It is an amenable number.

8937521 is a deficient number, since it is larger than the sum of its proper divisors (1).

8937521 is an equidigital number, since it uses as much as digits as its factorization.

8937521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 35.

The square root of 8937521 is about 2989.5686979897. The cubic root of 8937521 is about 207.5259250523.

The spelling of 8937521 in words is "eight million, nine hundred thirty-seven thousand, five hundred twenty-one".