108557859 has 4 divisors (see below), whose sum is σ = 144743816. Its totient is φ = 72371904.

The previous prime is 108557851. The next prime is 108557899. The reversal of 108557859 is 958755801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 958755801 = 3 ⋅319585267.

It is not a de Polignac number, because 108557859 - 2³ = 108557851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108557851) 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, 18092974 + ... + 18092979.

It is an arithmetic number, because the mean of its divisors is an integer number (36185954).

Almost surely, 2^108557859 is an apocalyptic number.

108557859 is a deficient number, since it is larger than the sum of its proper divisors (36185957).

108557859 is an equidigital number, since it uses as much as digits as its factorization.

108557859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36185956.

The product of its (nonzero) digits is 504000, while the sum is 48.

The square root of 108557859 is about 10419.1102787138. The cubic root of 108557859 is about 477.0388578148.

The spelling of 108557859 in words is "one hundred eight million, five hundred fifty-seven thousand, eight hundred fifty-nine".