550420100 has 18 divisors (see below), whose sum is σ = 1194411834. Its totient is φ = 220168000.

The previous prime is 550420099. The next prime is 550420127. The reversal of 550420100 is 1024055.

It can be written as a sum of positive squares in 3 ways, for example, as 123832384 + 426587716 = 11128^2 + 20654^2 .

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, 2752001 + ... + 2752200.

It is an arithmetic number, because the mean of its divisors is an integer number (66356213).

Almost surely, 2^550420100 is an apocalyptic number.

550420100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

550420100 is an abundant number, since it is smaller than the sum of its proper divisors (643991734).

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

550420100 is a wasteful number, since it uses less digits than its factorization.

550420100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5504215 (or 5504208 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 550420100 is about 23461.0336515679. The cubic root of 550420100 is about 819.5298216724.

Adding to 550420100 its reverse (1024055), we get a palindrome (551444155).

The spelling of 550420100 in words is "five hundred fifty million, four hundred twenty thousand, one hundred".