8552226821 has 4 divisors (see below), whose sum is σ = 8552598144. Its totient is φ = 8551855500.

The previous prime is 8552226811. The next prime is 8552226841. The reversal of 8552226821 is 1286222558.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8552226821 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8552226811) 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, 148655 + ... + 197996.

It is an arithmetic number, because the mean of its divisors is an integer number (2138149536).

Almost surely, 2^8552226821 is an apocalyptic number.

It is an amenable number.

8552226821 is a deficient number, since it is larger than the sum of its proper divisors (371323).

8552226821 is a wasteful number, since it uses less digits than its factorization.

8552226821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371322.

The product of its digits is 153600, while the sum is 41.

The square root of 8552226821 is about 92478.2505295164. The cubic root of 8552226821 is about 2044.9988598818.

The spelling of 8552226821 in words is "eight billion, five hundred fifty-two million, two hundred twenty-six thousand, eight hundred twenty-one".