0o554

0o554 is a hexadecimal number. The prefix "0o" indicates that the number is represented in octal, but the digits used (5 and 4) are valid in both octal and hexadecimal systems. Therefore, it's more accurate to interpret 0o554 as the octal number 554.

In octal, each digit represents a power of 8. So, the octal number 554 can be converted to its decimal equivalent as follows:

5 * 8^2 + 5 * 8^1 + 4 * 8^0 = 5 * 64 + 5 * 8 + 4 * 1 = 320 + 40 + 4 = 364.

Thus, the octal number 554 is equal to the decimal number 364.

If "0o554" was intended as a hexadecimal number, the standard prefix for hexadecimal is "0x". In that case, 0x554 would be interpreted as:

5 * 16^2 + 5 * 16^1 + 4 * 16^0 = 5 * 256 + 5 * 16 + 4 * 1 = 1280 + 80 + 4 = 1364.

However, the explicit "0o" prefix strongly suggests an octal interpretation.

The notation "0o" is sometimes used informally or in specific programming contexts as an octal literal. For instance, in Python 3, octal literals are written with a `0o` prefix. In this context, `0o554` would directly represent the octal value 554, which is equivalent to decimal 364.