10023521 has 2 divisors, whose sum is σ = 10023522. Its totient is φ = 10023520.

The previous prime is 10023511. The next prime is 10023527. The reversal of 10023521 is 12532001.

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., 9891025 + 132496 = 3145^2 + 364^2 .

It is a cyclic number.

It is not a de Polignac number, because 10023521 - 2¹⁰ = 10022497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10023496 and 10023505.

It is not a weakly prime, because it can be changed into another prime (10023527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5011760 + 5011761.

It is an arithmetic number, because the mean of its divisors is an integer number (5011761).

Almost surely, 2^10023521 is an apocalyptic number.

It is an amenable number.

10023521 is a deficient number, since it is larger than the sum of its proper divisors (1).

10023521 is an equidigital number, since it uses as much as digits as its factorization.

10023521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 10023521 is about 3165.9944725157. The cubic root of 10023521 is about 215.6122516022.

Adding to 10023521 its reverse (12532001), we get a palindrome (22555522).

The spelling of 10023521 in words is "ten million, twenty-three thousand, five hundred twenty-one".