10973521 has 4 divisors (see below), whose sum is σ = 11817652. Its totient is φ = 10129392.

The previous prime is 10973503. The next prime is 10973533. The reversal of 10973521 is 12537901.

10973521 is digitally balanced in base 2, 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 an emirpimes, since its reverse is a distinct semiprime: 12537901 = 1013 ⋅12377.

It can be written as a sum of positive squares in 2 ways, for example, as 2359296 + 8614225 = 1536^2 + 2935^2 .

It is not a de Polignac number, because 10973521 - 2¹⁷ = 10842449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10973521.

It is not an unprimeable number, because it can be changed into a prime (10973561) 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, 422046 + ... + 422071.

It is an arithmetic number, because the mean of its divisors is an integer number (2954413).

Almost surely, 2^10973521 is an apocalyptic number.

It is an amenable number.

10973521 is a deficient number, since it is larger than the sum of its proper divisors (844131).

10973521 is an equidigital number, since it uses as much as digits as its factorization.

10973521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844130.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 10973521 is about 3312.6305257303. The cubic root of 10973521 is about 222.2194148627.

The spelling of 10973521 in words is "ten million, nine hundred seventy-three thousand, five hundred twenty-one".