100550155 has 16 divisors (see below), whose sum is σ = 130481280. Its totient is φ = 74094592.

The previous prime is 100550141. The next prime is 100550161. The reversal of 100550155 is 551055001.

It is a cyclic number.

It is not a de Polignac number, because 100550155 - 2²⁵ = 66995723 is a prime.

It is a super-2 number, since 2×100550155² = 20220667341048050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8590 + ... + 16579.

It is an arithmetic number, because the mean of its divisors is an integer number (8155080).

Almost surely, 2^100550155 is an apocalyptic number.

100550155 is a deficient number, since it is larger than the sum of its proper divisors (29931125).

100550155 is a wasteful number, since it uses less digits than its factorization.

100550155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25238.

The product of its (nonzero) digits is 625, while the sum is 22.

The square root of 100550155 is about 10027.4700199003. The cubic root of 100550155 is about 465.0085249140.

The spelling of 100550155 in words is "one hundred million, five hundred fifty thousand, one hundred fifty-five".