100905227 has 4 divisors (see below), whose sum is σ = 100955400. Its totient is φ = 100855056.

The previous prime is 100905187. The next prime is 100905229. The reversal of 100905227 is 722509001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100905227 - 2⁸ = 100904971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100905196 and 100905205.

It is not an unprimeable number, because it can be changed into a prime (100905229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21938 + ... + 26135.

It is an arithmetic number, because the mean of its divisors is an integer number (25238850).

Almost surely, 2^100905227 is an apocalyptic number.

100905227 is a deficient number, since it is larger than the sum of its proper divisors (50173).

100905227 is an equidigital number, since it uses as much as digits as its factorization.

100905227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50172.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 100905227 is about 10045.1593815131. The cubic root of 100905227 is about 465.5552422381. Note that the first 3 decimals are identical.

The spelling of 100905227 in words is "one hundred million, nine hundred five thousand, two hundred twenty-seven".