10516321 has 2 divisors, whose sum is σ = 10516322. Its totient is φ = 10516320.

The previous prime is 10516301. The next prime is 10516327. The reversal of 10516321 is 12361501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6864400 + 3651921 = 2620^2 + 1911^2 .

It is a cyclic number.

It is not a de Polignac number, because 10516321 - 2⁷ = 10516193 is a prime.

It is a super-2 number, since 2×10516321² = 221186014750082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10516327) 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, 5258160 + 5258161.

It is an arithmetic number, because the mean of its divisors is an integer number (5258161).

Almost surely, 2^10516321 is an apocalyptic number.

It is an amenable number.

10516321 is a deficient number, since it is larger than the sum of its proper divisors (1).

10516321 is an equidigital number, since it uses as much as digits as its factorization.

10516321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 10516321 is about 3242.8877563061. The cubic root of 10516321 is about 219.0893556120.

Adding to 10516321 its reverse (12361501), we get a palindrome (22877822).

The spelling of 10516321 in words is "ten million, five hundred sixteen thousand, three hundred twenty-one".