100855559 has 8 divisors (see below), whose sum is σ = 116843040. Its totient is φ = 85262976.

The previous prime is 100855537. The next prime is 100855583. The reversal of 100855559 is 955558001.

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 100855559 - 2¹⁶ = 100790023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100855519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98174 + ... + 99195.

It is an arithmetic number, because the mean of its divisors is an integer number (14605380).

Almost surely, 2^100855559 is an apocalyptic number.

100855559 is a deficient number, since it is larger than the sum of its proper divisors (15987481).

100855559 is an equidigital number, since it uses as much as digits as its factorization.

100855559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197449.

The product of its (nonzero) digits is 45000, while the sum is 38.

The square root of 100855559 is about 10042.6868416774. The cubic root of 100855559 is about 465.4788438412.

The spelling of 100855559 in words is "one hundred million, eight hundred fifty-five thousand, five hundred fifty-nine".