10523521 has 8 divisors (see below), whose sum is σ = 10791144. Its totient is φ = 10258560.

The previous prime is 10523509. The next prime is 10523531. The reversal of 10523521 is 12532501.

10523521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 32400 + 10491121 = 180^2 + 3239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10523521 - 2⁷ = 10523393 is a prime.

It is a super-2 number, since 2×10523521² = 221488988474882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10523501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9045 + ... + 10141.

It is an arithmetic number, because the mean of its divisors is an integer number (1348893).

Almost surely, 2^10523521 is an apocalyptic number.

It is an amenable number.

10523521 is a deficient number, since it is larger than the sum of its proper divisors (267623).

10523521 is a wasteful number, since it uses less digits than its factorization.

10523521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 10523521 is about 3243.9976880386. The cubic root of 10523521 is about 219.1393440537.

The spelling of 10523521 in words is "ten million, five hundred twenty-three thousand, five hundred twenty-one".