550218500 has 48 divisors (see below), whose sum is σ = 1294129200. Its totient is φ = 203155200.

The previous prime is 550218491. The next prime is 550218509. The reversal of 550218500 is 5812055.

It is an interprime number because it is at equal distance from previous prime (550218491) and next prime (550218509).

It can be written as a sum of positive squares in 8 ways, for example, as 384787456 + 165431044 = 19616^2 + 12862^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 550218500.

It is not an unprimeable number, because it can be changed into a prime (550218509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35825 + ... + 48824.

It is an arithmetic number, because the mean of its divisors is an integer number (26961025).

Almost surely, 2^550218500 is an apocalyptic number.

550218500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

550218500 is an abundant number, since it is smaller than the sum of its proper divisors (743910700).

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

550218500 is a wasteful number, since it uses less digits than its factorization.

550218500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84681 (or 84669 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 550218500 is about 23456.7367721940. The cubic root of 550218500 is about 819.4297542346.

The spelling of 550218500 in words is "five hundred fifty million, two hundred eighteen thousand, five hundred".