550000100 has 72 divisors (see below), whose sum is σ = 1315332480. Its totient is φ = 198334080.

The previous prime is 550000097. The next prime is 550000103. The reversal of 550000100 is 1000055.

It is an interprime number because it is at equal distance from previous prime (550000097) and next prime (550000103).

It is a super-2 number, since 2×550000100² = 605000220000020000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (550000103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50981 + ... + 60819.

Almost surely, 2^550000100 is an apocalyptic number.

550000100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550000100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (657666240).

550000100 is an abundant number, since it is smaller than the sum of its proper divisors (765332380).

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

550000100 is a wasteful number, since it uses less digits than its factorization.

550000100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9909 (or 9902 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 11.

The square root of 550000100 is about 23452.0809311242. The cubic root of 550000100 is about 819.3213202565.

Adding to 550000100 its reverse (1000055), we get a palindrome (551000155).

The spelling of 550000100 in words is "five hundred fifty million, one hundred", and thus it is an aban number.