10453203521 has 4 divisors (see below), whose sum is σ = 10609221552. Its totient is φ = 10297185492.

The previous prime is 10453203499. The next prime is 10453203583. The reversal of 10453203521 is 12530235401.

It is a happy number.

10453203521 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 a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12530235401 = 271 ⋅46237031.

It is a cyclic number.

It is not a de Polignac number, because 10453203521 - 2¹⁰ = 10453202497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10453253521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78008915 + ... + 78009048.

It is an arithmetic number, because the mean of its divisors is an integer number (2652305388).

Almost surely, 2^10453203521 is an apocalyptic number.

It is an amenable number.

10453203521 is a deficient number, since it is larger than the sum of its proper divisors (156018031).

10453203521 is an equidigital number, since it uses as much as digits as its factorization.

10453203521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156018030.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 10453203521 its reverse (12530235401), we get a palindrome (22983438922).

The spelling of 10453203521 in words is "ten billion, four hundred fifty-three million, two hundred three thousand, five hundred twenty-one".