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550100003 = 643855521
BaseRepresentation
bin100000110010011…
…101110000100011
31102100002222100012
4200302131300203
52111311200003
6130330315135
716426526045
oct4062356043
91370088305
10550100003
11262576302
12134288aab
1389c76b7b
14530b7a95
15334628d8
hex20c9dc23

550100003 has 4 divisors (see below), whose sum is σ = 550956168. Its totient is φ = 549243840.

The previous prime is 550099997. The next prime is 550100009. The reversal of 550100003 is 300001055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300001055 = 560000211.

It is an interprime number because it is at equal distance from previous prime (550099997) and next prime (550100009).

It is a cyclic number.

It is not a de Polignac number, because 550100003 - 26 = 550099939 is a prime.

It is a super-2 number, since 2×5501000032 = 605220026601200018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550100009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427118 + ... + 428403.

It is an arithmetic number, because the mean of its divisors is an integer number (137739042).

Almost surely, 2550100003 is an apocalyptic number.

550100003 is a deficient number, since it is larger than the sum of its proper divisors (856165).

550100003 is an equidigital number, since it uses as much as digits as its factorization.

550100003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856164.

The product of its (nonzero) digits is 75, while the sum is 14.

The square root of 550100003 is about 23454.2107733345. The cubic root of 550100003 is about 819.3709249156.

Adding to 550100003 its reverse (300001055), we get a palindrome (850101058).

The spelling of 550100003 in words is "five hundred fifty million, one hundred thousand, three".

Divisors: 1 643 855521 550100003