555040100 has 18 divisors (see below), whose sum is σ = 1204437234. Its totient is φ = 222016000.

The previous prime is 555040093. The next prime is 555040133. The reversal of 555040100 is 1040555.

It can be written as a sum of positive squares in 3 ways, for example, as 343396 + 554696704 = 586^2 + 23552^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

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, 2775101 + ... + 2775300.

Almost surely, 2^555040100 is an apocalyptic number.

555040100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

555040100 is an abundant number, since it is smaller than the sum of its proper divisors (649397134).

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

555040100 is a wasteful number, since it uses less digits than its factorization.

555040100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5550415 (or 5550408 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 555040100 is about 23559.2890385088. The cubic root of 555040100 is about 821.8163682289.

Adding to 555040100 its reverse (1040555), we get a palindrome (556080655).

The spelling of 555040100 in words is "five hundred fifty-five million, forty thousand, one hundred".