10517521 has 4 divisors (see below), whose sum is σ = 12020032. Its totient is φ = 9015012.

The previous prime is 10517501. The next prime is 10517527. The reversal of 10517521 is 12571501.

10517521 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, and also an emirpimes, since its reverse is a distinct semiprime: 12571501 = 23 ⋅546587.

It is a cyclic number.

It is not a de Polignac number, because 10517521 - 2¹⁵ = 10484753 is a prime.

It is a super-2 number, since 2×10517521² = 221236495970882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10517492 and 10517501.

It is not an unprimeable number, because it can be changed into a prime (10517527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751245 + ... + 751258.

It is an arithmetic number, because the mean of its divisors is an integer number (3005008).

Almost surely, 2^10517521 is an apocalyptic number.

It is an amenable number.

10517521 is a deficient number, since it is larger than the sum of its proper divisors (1502511).

10517521 is an equidigital number, since it uses as much as digits as its factorization.

10517521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502510.

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 10517521 is about 3243.0727713081. The cubic root of 10517521 is about 219.0976886031.

The spelling of 10517521 in words is "ten million, five hundred seventeen thousand, five hundred twenty-one".