551100100 has 18 divisors (see below), whose sum is σ = 1195887434. Its totient is φ = 220440000.

The previous prime is 551100071. The next prime is 551100107. The reversal of 551100100 is 1001155.

It can be written as a sum of positive squares in 3 ways, for example, as 7650756 + 543449344 = 2766^2 + 23312^2 .

It is a super-2 number, since 2×551100100² = 607422640440020000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (551100107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2755401 + ... + 2755600.

Almost surely, 2^551100100 is an apocalyptic number.

551100100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

551100100 is an abundant number, since it is smaller than the sum of its proper divisors (644787334).

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

551100100 is a wasteful number, since it uses less digits than its factorization.

551100100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5511015 (or 5511008 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 13.

The square root of 551100100 is about 23475.5212934665. The cubic root of 551100100 is about 819.8671706321.

Adding to 551100100 its reverse (1001155), we get a palindrome (552101255).

It can be divided in two parts, 55 and 1100100, that multiplied together give a triangular number (60505500 = T₁₁₀₀₀).

The spelling of 551100100 in words is "five hundred fifty-one million, one hundred thousand, one hundred".