100855811 has 8 divisors (see below), whose sum is σ = 115358304. Its totient is φ = 86376960.

The previous prime is 100855801. The next prime is 100855841. The reversal of 100855811 is 118558001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100855811 is a prime.

It is a super-2 number, since 2×100855811² = 20343789224935442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100855801) 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, 4451 + ... + 14883.

It is an arithmetic number, because the mean of its divisors is an integer number (14419788).

Almost surely, 2^100855811 is an apocalyptic number.

100855811 is a deficient number, since it is larger than the sum of its proper divisors (14502493).

100855811 is a wasteful number, since it uses less digits than its factorization.

100855811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11821.

The product of its (nonzero) digits is 1600, while the sum is 29.

The square root of 100855811 is about 10042.6993881127. The cubic root of 100855811 is about 465.4792315262.

The spelling of 100855811 in words is "one hundred million, eight hundred fifty-five thousand, eight hundred eleven".