Fifty-eight is twice twenty-nine and reduces to thirteen and then four. It is among the many integers in the fifties that carry no traditional symbolism; the older systems, which loaded meaning onto the small numbers, the notable primes and the round figures, left it undeveloped. What can honestly be said of it is structural, it is twice a prime, it is the sum of the first seven prime numbers, and none of that is lore.
Fifty-eight falls outside Cheiro's 1926 compound-number scheme, which stops at fifty-two, so no reading attributed to his book is given here; Balliett's 1908 chart reduces it instead to four, order, work and material stability in the standard modern keyword list, one of the numbers in this family of articles where the American system's reading is the only symbolic content the number attracts at all, exactly as this article's own opening line already states.
Fifty-eight factors as 2 x 29 and carries 4 divisors in all. Summing its proper divisors gives only 32, short of the number itself, which places it among the deficient numbers in the same classical scheme.
A separate and older-claimed system, generally called Chaldean numerology, assigns letters to digits irregularly rather than in Balliett's repeating one-to-nine sequence, and deliberately omits nine from the chart as too sacred to attach to an ordinary letter; its popular billing as a genuinely ancient Babylonian system rests on assertion rather than on any textual evidence that has been traced back that far.