10823521 has 4 divisors (see below), whose sum is σ = 11393200. Its totient is φ = 10253844.

The previous prime is 10823507. The next prime is 10823531. The reversal of 10823521 is 12532801.

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: 12532801 = 1559 ⋅8039.

It is a de Polignac number, because none of the positive numbers 2^k-10823521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10823492 and 10823501.

It is not an unprimeable number, because it can be changed into a prime (10823531) 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, 284811 + ... + 284848.

It is an arithmetic number, because the mean of its divisors is an integer number (2848300).

Almost surely, 2^10823521 is an apocalyptic number.

It is an amenable number.

10823521 is a deficient number, since it is larger than the sum of its proper divisors (569679).

10823521 is an equidigital number, since it uses as much as digits as its factorization.

10823521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569678.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 10823521 is about 3289.9120049023. The cubic root of 10823521 is about 221.2022404280.

The spelling of 10823521 in words is "ten million, eight hundred twenty-three thousand, five hundred twenty-one".