58

58 is a natural number that comes after 57 and before 59. It is an even composite number, with prime factorization 2 × 29. Its divisors are 1, 2, 29, and 58. As a semiprime, it can be expressed as the product of two prime numbers in a single way.

In representation systems, 58 in decimal is 58; in binary it is 111010; in octal it is 72; in hexadecimal it is 3A. In Roman numerals it is LVIII. In ASCII encoding, the decimal code 58 corresponds to the colon character ':'.

In science, 58 is the atomic number of cerium (Ce), a lanthanide and a common rare-earth element in the Earth's crust. Cerium is notable for its abundance among rare earth elements and is used in catalysts, alloys, and glass manufacturing. The element is named after the asteroid Ceres.

In calendar terms, the 58th day of the year falls on February 27 in both common and leap years in the Gregorian calendar.

In international telecommunications, the country calling code for Venezuela is +58.