10103521 has 2 divisors, whose sum is σ = 10103522. Its totient is φ = 10103520.

The previous prime is 10103477. The next prime is 10103531. The reversal of 10103521 is 12530101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6451600 + 3651921 = 2540^2 + 1911^2 .

It is a cyclic number.

It is not a de Polignac number, because 10103521 - 2⁷ = 10103393 is a prime.

It is a super-2 number, since 2×10103521² = 204162273194882, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10103531) 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, 5051760 + 5051761.

It is an arithmetic number, because the mean of its divisors is an integer number (5051761).

Almost surely, 2^10103521 is an apocalyptic number.

It is an amenable number.

10103521 is a deficient number, since it is larger than the sum of its proper divisors (1).

10103521 is an equidigital number, since it uses as much as digits as its factorization.

10103521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 10103521 is about 3178.6036242350. The cubic root of 10103521 is about 216.1843490778.

Adding to 10103521 its reverse (12530101), we get a palindrome (22633622).

The spelling of 10103521 in words is "ten million, one hundred three thousand, five hundred twenty-one".