100109255 has 4 divisors (see below), whose sum is σ = 120131112. Its totient is φ = 80087400.

The previous prime is 100109239. The next prime is 100109257. The reversal of 100109255 is 552901001.

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

It is not a de Polignac number, because 100109255 - 2⁴ = 100109239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100109255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100109257) 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, 10010921 + ... + 10010930.

It is an arithmetic number, because the mean of its divisors is an integer number (30032778).

Almost surely, 2^100109255 is an apocalyptic number.

100109255 is a deficient number, since it is larger than the sum of its proper divisors (20021857).

100109255 is an equidigital number, since it uses as much as digits as its factorization.

100109255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20021856.

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 100109255 is about 10005.4612587327. The cubic root of 100109255 is about 464.3278607668.

The spelling of 100109255 in words is "one hundred million, one hundred nine thousand, two hundred fifty-five".