100811255 has 12 divisors (see below), whose sum is σ = 122130840. Its totient is φ = 79884672.

The previous prime is 100811237. The next prime is 100811257. The reversal of 100811255 is 552118001.

It is not a de Polignac number, because 100811255 - 2¹⁰ = 100810231 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100811255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100811257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63056 + ... + 64634.

It is an arithmetic number, because the mean of its divisors is an integer number (10177570).

Almost surely, 2^100811255 is an apocalyptic number.

100811255 is a deficient number, since it is larger than the sum of its proper divisors (21319585).

100811255 is an equidigital number, since it uses as much as digits as its factorization.

100811255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1810 (or 1697 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 23.

The square root of 100811255 is about 10040.4808151801. The cubic root of 100811255 is about 465.4106750813.

Adding to 100811255 its reverse (552118001), we get a palindrome (652929256).

The spelling of 100811255 in words is "one hundred million, eight hundred eleven thousand, two hundred fifty-five".