10716521 has 4 divisors (see below), whose sum is σ = 10761600. Its totient is φ = 10671444.

The previous prime is 10716499. The next prime is 10716529. The reversal of 10716521 is 12561701.

10716521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10716521 - 2¹⁸ = 10454377 is a prime.

It is a super-2 number, since 2×10716521² = 229687644686882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10716529) 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 in 3 ways as a sum of consecutive naturals, for example, 22181 + ... + 22658.

It is an arithmetic number, because the mean of its divisors is an integer number (2690400).

Almost surely, 2^10716521 is an apocalyptic number.

It is an amenable number.

10716521 is a deficient number, since it is larger than the sum of its proper divisors (45079).

10716521 is an equidigital number, since it uses as much as digits as its factorization.

10716521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45078.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 10716521 is about 3273.6097812659. The cubic root of 10716521 is about 220.4708990583.

The spelling of 10716521 in words is "ten million, seven hundred sixteen thousand, five hundred twenty-one".