550055000 has 160 divisors (see below), whose sum is σ = 1435602960. Its totient is φ = 195840000.

The previous prime is 550054991. The next prime is 550055003. The reversal of 550055000 is 550055.

It is a happy number.

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

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550055003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4014932 + ... + 4015068.

Almost surely, 2^550055000 is an apocalyptic number.

550055000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550055000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (717801480).

550055000 is an abundant number, since it is smaller than the sum of its proper divisors (885547960).

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

550055000 is a wasteful number, since it uses less digits than its factorization.

550055000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 20.

The square root of 550055000 is about 23453.2513737435. The cubic root of 550055000 is about 819.3485803994.

550055000 divided by its product of nonzero digits (625) gives a palindrome (880088).

550055000 divided by its reverse (550055) gives a cube (1000 = 10³).

It can be divided in two parts, 5 and 50055000, that added together give a palindrome (50055005).

The spelling of 550055000 in words is "five hundred fifty million, fifty-five thousand".