Probably 1550 yuan. Compound interest means that the interest of each period is included in the next period as the principal to continue to generate new interest. The corresponding simple interest means that the principal of each period is unchanged and the interest generated in each period is the same. It is assumed that 1 10,000 yuan will be compounded by 5% every day, and one month will be counted as 30 days as usual. Due in one month, the total principal and interest 100000×5% times 3 1, which is equal to 500 times 3 1, which is equal to 1.550 yuan, and the compound interest in January is at least 1.550 yuan. Investment is risky, so I suggest you make a careful decision.