8857556243 has 4 divisors (see below), whose sum is σ = 9242667408. Its totient is φ = 8472445080.

The previous prime is 8857556219. The next prime is 8857556299. The reversal of 8857556243 is 3426557588.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8857556243 - 2¹² = 8857552147 is a prime.

It is a super-3 number, since 3×8857556243³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8857552243) 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, 192555548 + ... + 192555593.

It is an arithmetic number, because the mean of its divisors is an integer number (2310666852).

Almost surely, 2^8857556243 is an apocalyptic number.

8857556243 is a deficient number, since it is larger than the sum of its proper divisors (385111165).

8857556243 is a wasteful number, since it uses less digits than its factorization.

8857556243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385111164.

The product of its digits is 8064000, while the sum is 53.

The square root of 8857556243 is about 94114.5910207339. The cubic root of 8857556243 is about 2069.0515264708.

The spelling of 8857556243 in words is "eight billion, eight hundred fifty-seven million, five hundred fifty-six thousand, two hundred forty-three".