551000100100 has 18 divisors (see below), whose sum is σ = 1195670217434. Its totient is φ = 220400040000.

The previous prime is 551000100067. The next prime is 551000100127. The reversal of 551000100100 is 1001000155.

It can be written as a sum of positive squares in 3 ways, for example, as 161481815104 + 389518284996 = 401848^2 + 624114^2 .

It is a super-2 number, since 2×551000100100² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2755000401 + ... + 2755000600.

Almost surely, 2^551000100100 is an apocalyptic number.

551000100100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

551000100100 is an abundant number, since it is smaller than the sum of its proper divisors (644670117334).

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

551000100100 is a wasteful number, since it uses less digits than its factorization.

551000100100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5510001015 (or 5510001008 counting only the distinct ones).

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

Adding to 551000100100 its reverse (1001000155), we get a palindrome (552001100255).

The spelling of 551000100100 in words is "five hundred fifty-one billion, one hundred thousand, one hundred".