100955 has 8 divisors (see below), whose sum is σ = 123504. Its totient is φ = 79200.

The previous prime is 100943. The next prime is 100957. The reversal of 100955 is 559001.

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

It is not a de Polignac number, because 100955 - 2⁸ = 100699 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 100955.

It is not an unprimeable number, because it can be changed into a prime (100957) 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, 140 + ... + 470.

It is an arithmetic number, because the mean of its divisors is an integer number (15438).

2¹⁰⁰⁹⁵⁵ is an apocalyptic number.

100955 is a deficient number, since it is larger than the sum of its proper divisors (22549).

100955 is an equidigital number, since it uses as much as digits as its factorization.

100955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397.

The product of its (nonzero) digits is 225, while the sum is 20.

The square root of 100955 is about 317.7341656165. The cubic root of 100955 is about 46.5631776998.

Adding to 100955 its reverse (559001), we get a palindrome (659956).

The spelling of 100955 in words is "one hundred thousand, nine hundred fifty-five".