551550500 has 24 divisors (see below), whose sum is σ = 1204587384. Its totient is φ = 220620000.

The previous prime is 551550497. The next prime is 551550523. The reversal of 551550500 is 5055155.

It can be written as a sum of positive squares in 4 ways, for example, as 37258816 + 514291684 = 6104^2 + 22678^2 .

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 551550500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551051 + ... + 552050.

It is an arithmetic number, because the mean of its divisors is an integer number (50191141).

Almost surely, 2^551550500 is an apocalyptic number.

551550500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

551550500 is an abundant number, since it is smaller than the sum of its proper divisors (653036884).

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

551550500 is a wasteful number, since it uses less digits than its factorization.

551550500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103120 (or 1103108 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 26.

The square root of 551550500 is about 23485.1123054585. The cubic root of 551550500 is about 820.0904619612.

The spelling of 551550500 in words is "five hundred fifty-one million, five hundred fifty thousand, five hundred".