100551055 has 32 divisors (see below), whose sum is σ = 138889728. Its totient is φ = 69168000.

The previous prime is 100551041. The next prime is 100551079. The reversal of 100551055 is 550155001.

It is not a de Polignac number, because 100551055 - 2⁹ = 100550543 is a prime.

It is a super-2 number, since 2×100551055² = 20221029323226050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127372 + ... + 128158.

It is an arithmetic number, because the mean of its divisors is an integer number (4340304).

Almost surely, 2^100551055 is an apocalyptic number.

100551055 is a deficient number, since it is larger than the sum of its proper divisors (38338673).

100551055 is a wasteful number, since it uses less digits than its factorization.

100551055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927.

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

The square root of 100551055 is about 10027.5148965235. The cubic root of 100551055 is about 465.0099123027.

It can be divided in two parts, 100 and 551055, that added together give a palindrome (551155).

The spelling of 100551055 in words is "one hundred million, five hundred fifty-one thousand, fifty-five".