100540555 has 4 divisors (see below), whose sum is σ = 120648672. Its totient is φ = 80432440.

The previous prime is 100540553. The next prime is 100540577. The reversal of 100540555 is 555045001.

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

It is not a de Polignac number, because 100540555 - 2¹ = 100540553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100540553) 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, 10054051 + ... + 10054060.

It is an arithmetic number, because the mean of its divisors is an integer number (30162168).

Almost surely, 2^100540555 is an apocalyptic number.

100540555 is a deficient number, since it is larger than the sum of its proper divisors (20108117).

100540555 is an equidigital number, since it uses as much as digits as its factorization.

100540555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20108116.

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 100540555 is about 10026.9913234230. The cubic root of 100540555 is about 464.9937255869.

Adding to 100540555 its reverse (555045001), we get a palindrome (655585556).

The spelling of 100540555 in words is "one hundred million, five hundred forty thousand, five hundred fifty-five".