27587 is a member of the commas sequence OEIS A121805. See my blog post The Commas Sequence. Here are the terms from 27587 to 40000:

27587, 27659, 27751, 27763, 27795, 27847, 27919, 28011, 28023, 28055, 28107, 28179, 28271, 28283, 28315, 28367, 28439, 28531, 28543, 28575, 28627, 28699, 28791, 28803, 28835, 28887, 28959, 29051, 29063, 29095, 29147, 29219, 29311, 29323, 29355, 29407, 29479, 29571, 29583, 29615, 29667, 29739, 29831, 29843, 29875, 29927, 29999, 30092, 30115, 30168, 30251, 30264, 30307, 30380, 30383, 30416, 30479, 30572, 30595, 30648, 30731, 30744, 30787, 30860, 30863, 30896, 30959, 31052, 31075, 31128, 31211, 31224, 31267, 31340, 31343, 31376, 31439, 31532, 31555, 31608, 31691, 31704, 31747, 31820, 31823, 31856, 31919, 32012, 32035, 32088, 32171, 32184, 32227, 32300, 32303, 32336, 32399, 32492, 32515, 32568, 32651, 32664, 32707, 32780, 32783, 32816, 32879, 32972, 32995, 33048, 33131, 33144, 33187, 33260, 33263, 33296, 33359, 33452, 33475, 33528, 33611, 33624, 33667, 33740, 33743, 33776, 33839, 33932, 33955, 34008, 34091, 34104, 34147, 34220, 34223, 34256, 34319, 34412, 34435, 34488, 34571, 34584, 34627, 34700, 34703, 34736, 34799, 34892, 34915, 34968, 35051, 35064, 35107, 35180, 35183, 35216, 35279, 35372, 35395, 35448, 35531, 35544, 35587, 35660, 35663, 35696, 35759, 35852, 35875, 35928, 36011, 36024, 36067, 36140, 36143, 36176, 36239, 36332, 36355, 36408, 36491, 36504, 36547, 36620, 36623, 36656, 36719, 36812, 36835, 36888, 36971, 36984, 37027, 37100, 37103, 37136, 37199, 37292, 37315, 37368, 37451, 37464, 37507, 37580, 37583, 37616, 37679, 37772, 37795, 37848, 37931, 37944, 37987, 38060, 38063, 38096, 38159, 38252, 38275, 38328, 38411, 38424, 38467, 38540, 38543, 38576, 38639, 38732, 38755, 38808, 38891, 38904, 38947, 39020, 39023 

27587 is a Duffinian number.

27587 is a nialpdrome in base 13 (c731).

27587 can be rendered as a digit equation as follows:

-2 + 7 = 5 * (8 - 7)