Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What's the smallest area in Russia that is ranked 23 with a population more than 522,800?

### Inputs:
table_name: table, columns: ['Rank', 'Subdivision name', 'Country', 'Area (km²)', 'Population']

### Response:
SELECT MIN Area (km²) FROM table WHERE Country = russia AND Rank = 23 AND Population > 522,800