10221553 has 4 divisors (see below), whose sum is σ = 10228288. Its totient is φ = 10214820.

The previous prime is 10221551. The next prime is 10221557. The reversal of 10221553 is 35512201.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 35512201 = 17 ⋅2088953.

It is a cyclic number.

It is not a de Polignac number, because 10221553 - 2¹ = 10221551 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 10221553.

It is not an unprimeable number, because it can be changed into a prime (10221551) 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, 100 + ... + 4522.

It is an arithmetic number, because the mean of its divisors is an integer number (2557072).

Almost surely, 2^10221553 is an apocalyptic number.

It is an amenable number.

10221553 is a deficient number, since it is larger than the sum of its proper divisors (6735).

10221553 is an equidigital number, since it uses as much as digits as its factorization.

10221553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6734.

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

The square root of 10221553 is about 3197.1163569692. The cubic root of 10221553 is about 217.0229328691.

Adding to 10221553 its reverse (35512201), we get a palindrome (45733754).

The spelling of 10221553 in words is "ten million, two hundred twenty-one thousand, five hundred fifty-three".