561

Summary

561 is a positive integer^[1]. 561 has Wikipedia articles in 13 language editions, a strong signal of global cultural recognition.^[2]

Key Facts

• 561's instance of is recorded as positive integer^[3].
• 561's instance of is recorded as odd number^[4].
• 561's instance of is recorded as triangular number^[5].
• 561's instance of is recorded as centered icosahedral number^[6].
• 561's instance of is recorded as dodecagonal number^[7].
• 561's instance of is recorded as hexagonal number^[8].
• 561's instance of is recorded as composite number^[9].
• 561's instance of is recorded as Carmichael number^[10].
• 561's Commons category is recorded as 561 (number)^[11].
• 561's numeric value is recorded as {'amount': '+561'}^[12].
• 561's code is recorded as 231^[13].
• 561's code is recorded as ๕๖๑^[14].
• 561's code is recorded as ৫৬১^[15].
• 561's code is recorded as DLXI^[16].
• 561's code is recorded as ५६१^[17].
• 561's code is recorded as 1000110001^[18].
• 561's code is recorded as ૫૬૧^[19].
• 561's code is recorded as ௫௱௬௰௧^[20].
• 561's code is recorded as ௫௬௧^[21].
• 561's code is recorded as · · · · · − · · · · · − − − −^[22].
• 561's code is recorded as ៥៦១^[23].
• 561's code is recorded as ೫೬೧^[24].
• 561's code is recorded as ໕໖໑^[25].
• 561's code is recorded as ൫൬൧^[26].
• 561's code is recorded as ൫൱൬൰൧^[27].

Body

Definition and Type

Recorded instance of include positive integer^[3], odd number^[4], triangular number^[5], centered icosahedral number^[6], dodecagonal number^[7], and hexagonal number^[8].

Why It Matters

561 has Wikipedia articles in 13 language editions, a strong signal of global cultural recognition.^[2] 561 is known by 13 alternative names across languages and contexts.^[28]