8203226521 has 4 divisors (see below), whose sum is σ = 9375116032. Its totient is φ = 7031337012.

The previous prime is 8203226501. The next prime is 8203226533. The reversal of 8203226521 is 1256223028.

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.

It is not a de Polignac number, because 8203226521 - 2⁵ = 8203226489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8203226501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 585944745 + ... + 585944758.

It is an arithmetic number, because the mean of its divisors is an integer number (2343779008).

Almost surely, 2^8203226521 is an apocalyptic number.

It is an amenable number.

8203226521 is a deficient number, since it is larger than the sum of its proper divisors (1171889511).

8203226521 is a wasteful number, since it uses less digits than its factorization.

8203226521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171889510.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 8203226521 is about 90571.6651111152. The cubic root of 8203226521 is about 2016.7941273384.

Adding to 8203226521 its reverse (1256223028), we get a palindrome (9459449549).

The spelling of 8203226521 in words is "eight billion, two hundred three million, two hundred twenty-six thousand, five hundred twenty-one".