55
natural number
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Summary
55 is a positive integer[1]. 55 draws 1,661 Wikipedia views per month (positive integer category, ranking #78 of 724).[2]
Key Facts
- Instance of: triangular number[3], square pyramidal number[4], heptagonal number[5], centered nonagonal number[6], semiprime[7], palindromic number[8], Kaprekar number[9], repdigit[10], odd number[11], centered icosahedral number[12], Fibonacci number[13], composite number[14]
- Commons category: 55 (number)[15]
- Numeric value: 55[16]
- Code: ௫௰௫[17], ௫௫[18], LV[19], 𒐐𒐙[20], 110111[21], 2001[22], 313[23], 210[24], 131[25], 106[26], 61[27], 67[28], 55[29], 50[30]
- Prime factor: 5[31], 11[32]
- Maintained by WikiProject: WikiProject Mathematics[33]
- Number of decimal digits: 2[34]
Why It Matters
55 has Wikipedia articles in 28 language editions, a strong signal of global cultural recognition.[35] 55 is known by 26 alternative names across languages and contexts.[36]