8517222057 has 8 divisors (see below), whose sum is σ = 11356898976. Its totient is φ = 5677846592.

The previous prime is 8517222047. The next prime is 8517222113. The reversal of 8517222057 is 7502227158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8517222057 - 2¹⁴ = 8517205673 is a prime.

It is a super-2 number, since 2×8517222057² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8517222047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1873 + ... + 130529.

It is an arithmetic number, because the mean of its divisors is an integer number (1419612372).

Almost surely, 2^8517222057 is an apocalyptic number.

It is an amenable number.

8517222057 is a deficient number, since it is larger than the sum of its proper divisors (2839676919).

8517222057 is a wasteful number, since it uses less digits than its factorization.

8517222057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150727.

The product of its (nonzero) digits is 78400, while the sum is 39.

The square root of 8517222057 is about 92288.7970286752. The cubic root of 8517222057 is about 2042.2049445872.

The spelling of 8517222057 in words is "eight billion, five hundred seventeen million, two hundred twenty-two thousand, fifty-seven".