97

Number
$97$ (ninety-seven) is:


 * The $25$th prime number


 * The $8$th emirp after $13, 17, 31, 37, 71, 73, 79$


 * The $19$th happy number after $1, 7, 10, 13, 19, 23, 28, 31, 32, 44, 49, 68, 70, 79, 82, 86, 91, 94$:
 * $97 \to 9^2 + 7^2 = 81 + 49 = 130 \to 1^2 + 3^2 + 0^2 = 1 + 9 + 0 = 10 \to 1^2 + 0^2 = 1$