100855530 has 40 divisors (see below), whose sum is σ = 271191492. Its totient is φ = 26894592.

The previous prime is 100855519. The next prime is 100855537. The reversal of 100855530 is 35558001.

100855530 is a `hidden beast` number, since 100 + 8 + 5 + 553 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 81486729 + 19368801 = 9027^2 + 4401^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100855494 and 100855503.

It is not an unprimeable number, because it can be changed into a prime (100855537) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 61447 + ... + 63066.

Almost surely, 2^100855530 is an apocalyptic number.

100855530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100855530 is an abundant number, since it is smaller than the sum of its proper divisors (170335962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100855530 is a wasteful number, since it uses less digits than its factorization.

100855530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124532 (or 124523 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 100855530 is about 10042.6853978406. The cubic root of 100855530 is about 465.4787992266.

Subtracting from 100855530 its sum of digits (27), we obtain a triangular number (100855503 = T₁₄₂₀₂).

The spelling of 100855530 in words is "one hundred million, eight hundred fifty-five thousand, five hundred thirty".