53 (number) Article Index for
53
 

Information About

53 (number)






Cardinal 53
fifty-three
Ordinal 53rd
fifty-third
Factorization ''prime''
Roman Numeral LIII
Binary 110101
Hexadecimal 35



IN MATHEMATICS


Fifty-three is the 16th smallest Prime Number . The next is Fifty-nine . Fifty-three is also a Sophie Germain Prime , and the sum of five consecutive primes (5 + 7 + 11 + 13 + 17). It is an Eisenstein Prime with no imaginary part and real part of the form 3n - 1. Since 53 is equal to the arithmetic mean of its two neighboring primes, 47 and 59, it is a Balanced Prime .

53 written in hexadecimal is 35, that is, the same characters used in the decimal representation, but reversed. Three multiples of 53 share this property: 371 = 17316, 5141 = 141516, 99481 = 1849916.

But 53 can not be expressed as the sum of any integer and its base 10 digits, making 53 a Self Number .

53 is a Strictly Non-palindromic Number .


IN SCIENCE


In Astronomy ,



  • The series which began on -1295 August 26 and ended on 220 February 21 . The duration of Saros series 53 was 1514.5 years, and it contained 85 solar eclipses.




IN OTHER FIELDS


Fifty-three is also: