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550565 = 5293797
BaseRepresentation
bin10000110011010100101
31000222020022
42012122211
5120104230
615444525
74452101
oct2063245
91028208
10550565
11346714
12226745
131637a2
14104901
15ad1e5
hex866a5

550565 has 8 divisors (see below), whose sum is σ = 683640. Its totient is φ = 425152.

The previous prime is 550553. The next prime is 550577. The reversal of 550565 is 565055.

It is a Cunningham number, because it is equal to 7422+1.

It is an interprime number because it is at equal distance from previous prime (550553) and next prime (550577).

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 550564 = 1^2 + 742^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 550565 - 28 = 550309 is a prime.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 550565.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1754 + ... + 2043.

It is an arithmetic number, because the mean of its divisors is an integer number (85455).

2550565 is an apocalyptic number.

It is an amenable number.

550565 is a deficient number, since it is larger than the sum of its proper divisors (133075).

550565 is a wasteful number, since it uses less digits than its factorization.

550565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3831.

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 550565 is about 742.0006738541. Note that the first 3 decimals coincide. The cubic root of 550565 is about 81.9601730052.

The spelling of 550565 in words is "five hundred fifty thousand, five hundred sixty-five".

Divisors: 1 5 29 145 3797 18985 110113 550565