100044155 has 8 divisors (see below), whose sum is σ = 120318432. Its totient is φ = 79858368.

The previous prime is 100044137. The next prime is 100044157. The reversal of 100044155 is 551440001.

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

It is a cyclic number.

It is not a de Polignac number, because 100044155 - 2¹⁰ = 100043131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100044157) 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, 19607 + ... + 24176.

It is an arithmetic number, because the mean of its divisors is an integer number (15039804).

Almost surely, 2^100044155 is an apocalyptic number.

100044155 is a deficient number, since it is larger than the sum of its proper divisors (20274277).

100044155 is an equidigital number, since it uses as much as digits as its factorization.

100044155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44245.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 100044155 is about 10002.2075063458. The cubic root of 100044155 is about 464.2271897604.

Adding to 100044155 its reverse (551440001), we get a palindrome (651484156).

The spelling of 100044155 in words is "one hundred million, forty-four thousand, one hundred fifty-five".