100887155 has 16 divisors (see below), whose sum is σ = 122688000. Its totient is φ = 79635840.

The previous prime is 100887151. The next prime is 100887167. The reversal of 100887155 is 551788001.

It is not a de Polignac number, because 100887155 - 2² = 100887151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100887151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141941 + ... + 142649.

It is an arithmetic number, because the mean of its divisors is an integer number (7668000).

Almost surely, 2^100887155 is an apocalyptic number.

100887155 is a deficient number, since it is larger than the sum of its proper divisors (21800845).

100887155 is a wasteful number, since it uses less digits than its factorization.

100887155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054.

The product of its (nonzero) digits is 11200, while the sum is 35.

The square root of 100887155 is about 10044.2598034898. The cubic root of 100887155 is about 465.5274471247.

The spelling of 100887155 in words is "one hundred million, eight hundred eighty-seven thousand, one hundred fifty-five".