8566053921 has 48 divisors (see below), whose sum is σ = 13061468160. Its totient is φ = 5399222400.

The previous prime is 8566053913. The next prime is 8566053929. The reversal of 8566053921 is 1293506658.

8566053921 is a `hidden beast` number, since 8 + 5 + 6 + 605 + 39 + 2 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (8566053913) and next prime (8566053929).

It is not a de Polignac number, because 8566053921 - 2³ = 8566053913 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (8566053929) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7441696 + ... + 7442846.

It is an arithmetic number, because the mean of its divisors is an integer number (272113920).

Almost surely, 2^8566053921 is an apocalyptic number.

It is an amenable number.

8566053921 is a deficient number, since it is larger than the sum of its proper divisors (4495414239).

8566053921 is a wasteful number, since it uses less digits than its factorization.

8566053921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566 (or 1563 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 8566053921 is about 92552.9789958162. The cubic root of 8566053921 is about 2046.1003733262.

The spelling of 8566053921 in words is "eight billion, five hundred sixty-six million, fifty-three thousand, nine hundred twenty-one".