8517387161 has 8 divisors (see below), whose sum is σ = 8756918664. Its totient is φ = 8278346880.

The previous prime is 8517387149. The next prime is 8517387211. The reversal of 8517387161 is 1617837158.

It can be written as a sum of positive squares in 4 ways, for example, as 1300035136 + 7217352025 = 36056^2 + 84955^2 .

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 8517387161 - 2⁶ = 8517387097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8517387121) 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 7 ways as a sum of consecutive naturals, for example, 87500 + ... + 157133.

It is an arithmetic number, because the mean of its divisors is an integer number (1094614833).

Almost surely, 2^8517387161 is an apocalyptic number.

It is an amenable number.

8517387161 is a deficient number, since it is larger than the sum of its proper divisors (239531503).

8517387161 is a wasteful number, since it uses less digits than its factorization.

8517387161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245611.

The product of its digits is 282240, while the sum is 47.

The square root of 8517387161 is about 92289.6915207760. The cubic root of 8517387161 is about 2042.2181403618.

The spelling of 8517387161 in words is "eight billion, five hundred seventeen million, three hundred eighty-seven thousand, one hundred sixty-one".