108517859 has 2 divisors, whose sum is σ = 108517860. Its totient is φ = 108517858.

The previous prime is 108517847. The next prime is 108517861. The reversal of 108517859 is 958715801.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 108517859 - 2¹² = 108513763 is a prime.

It is a super-2 number, since 2×108517859² = 23552251443887762, which contains 22 as substring.

Together with 108517861, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (108517819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54258929 + 54258930.

It is an arithmetic number, because the mean of its divisors is an integer number (54258930).

Almost surely, 2^108517859 is an apocalyptic number.

108517859 is a deficient number, since it is larger than the sum of its proper divisors (1).

108517859 is an equidigital number, since it uses as much as digits as its factorization.

108517859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 44.

The square root of 108517859 is about 10417.1905521594. The cubic root of 108517859 is about 476.9802595748.

The spelling of 108517859 in words is "one hundred eight million, five hundred seventeen thousand, eight hundred fifty-nine".