100100550 has 192 divisors, whose sum is σ = 297123840. Its totient is φ = 22032000.

The previous prime is 100100537. The next prime is 100100551. The reversal of 100100550 is 55001001.

It is a super-2 number, since 2×100100550² = 20040240220605000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100100551) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 971799 + ... + 971901.

It is an arithmetic number, because the mean of its divisors is an integer number (1547520).

Almost surely, 2^100100550 is an apocalyptic number.

100100550 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 100100550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148561920).

100100550 is an abundant number, since it is smaller than the sum of its proper divisors (197023290).

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

100100550 is a wasteful number, since it uses less digits than its factorization.

100100550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 12.

The square root of 100100550 is about 10005.0262368472. The cubic root of 100100550 is about 464.3144018341.

Adding to 100100550 its reverse (55001001), we get a palindrome (155101551).

The spelling of 100100550 in words is "one hundred million, one hundred thousand, five hundred fifty".