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550000 = 245511
BaseRepresentation
bin10000110010001110000
31000221110101
42012101300
5120100000
615442144
74450333
oct2062160
91027411
10550000
11346250
12226354
13163459
1410461a
15ace6a
hex86470

550000 has 60 divisors (see below), whose sum is σ = 1453032. Its totient is φ = 200000.

The previous prime is 549979. The next prime is 550007. The reversal of 550000 is 55.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a nialpdrome in base 10.

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 (550007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49995 + ... + 50005.

2550000 is an apocalyptic number.

550000 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 550000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (726516).

550000 is an abundant number, since it is smaller than the sum of its proper divisors (903032).

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

550000 is an equidigital number, since it uses as much as digits as its factorization.

550000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44 (or 18 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 10.

The square root of 550000 is about 741.6198487096. The cubic root of 550000 is about 81.9321270601.

Adding to 550000 its reverse (55), we get a palindrome (550055).

Subtracting from 550000 its reverse (55), we obtain a palindrome (549945).

Multiplying 550000 by its reverse (55), we get a square (30250000 = 55002).

550000 divided by its reverse (55) gives a 4-th power (10000 = 104).

It can be divided in two parts, 5 and 50000, that multiplied together give a square (250000 = 5002).

The spelling of 550000 in words is "five hundred fifty thousand".

Divisors: 1 2 4 5 8 10 11 16 20 22 25 40 44 50 55 80 88 100 110 125 176 200 220 250 275 400 440 500 550 625 880 1000 1100 1250 1375 2000 2200 2500 2750 3125 4400 5000 5500 6250 6875 10000 11000 12500 13750 22000 25000 27500 34375 50000 55000 68750 110000 137500 275000 550000