Mathf.IsPowerOfTwo

public static bool IsPowerOfTwo (int value);

설명

Returns true if the value is power of two.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void Example() {
        Debug.Log(Mathf.IsPowerOfTwo(7));
        Debug.Log(Mathf.IsPowerOfTwo(32));
    }
}