100550550 has 48 divisors (see below), whose sum is σ = 251872272. Its totient is φ = 26544000.

The previous prime is 100550543. The next prime is 100550561. The reversal of 100550550 is 55055001.

It is a super-2 number, since 2×100550550² = 20220826210605000, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 11832 + ... + 18468.

It is an arithmetic number, because the mean of its divisors is an integer number (5247339).

Almost surely, 2^100550550 is an apocalyptic number.

100550550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 100550550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125936136).

100550550 is an abundant number, since it is smaller than the sum of its proper divisors (151321722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100550550 is a wasteful number, since it uses less digits than its factorization.

100550550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6753 (or 6748 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 21.

The square root of 100550550 is about 10027.4897157763. The cubic root of 100550550 is about 465.0091338245.

The spelling of 100550550 in words is "one hundred million, five hundred fifty thousand, five hundred fifty".