ios时间格式转换

"publishTime":1453458780000,
服务器返回的时间是这样的，怎么转为几月几号几时几分

---

long long interval = 1453458780000;
NSDate *date = [NSDate dateWithTimeIntervalSince1970: interval / 1000];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSLog(@"%@", [dateFormatter stringFromDate: date]);

输出

2016-01-22 18:33:00