Burma (/ˈbɜrmə/ BUR-mə), officially the Republic of the Union of Myanmar, commonly shortened to Myanmar (/ˈmjɑːnˌmɑr/ MYAHN-mar,/ˈmjænmɑr/ or /ˈmaɪænmɑr/, Burmese pronunciation: [mjəmà]), is a sovereign state in Southeast Asia bordered by Bangladesh, India, China, Laos and Thailand. One-third of Burma's total perimeter of 1,930 km (1,200 miles) forms an uninterrupted coastline along the Bay of Bengal and the Andaman Sea. Burma has a population of 51 million people. Burma is 676,578 square kilometres (261,227 sq mi) in size.